- Fillister Head Wood Screws
- What Is Fillister Head Screw
- Metric Fillister Head Machine Screws
- Fillister Head Machine Screw
- Slotted Fillister Head Machine Screw Blocks Autocad Blocks
CAD blocks of the tapping screw, dowel. Attachment=516:screws.dwg Admin.
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This lists all of the standard content Onshape provides for your convenience. If the standard content you require is listed here, you don't have to model it - you can simply use the Insert parts and assemblies dialog to select the standard content you need. Check back here often to see what is available, since Onshape updates this list often.
Bolts & Screws
Countersunk bolts | Countersunk bolt, Countersunk square neck bolt |
Set screws (hex socket) | Oval point hex socket set screw, Half dog point hex socket set screw, Flat point hex socket set screw, Cup point hex socket set screw, Cone point hex socket set screw |
Set screws (square head) | Oval point square head set screw, Half dog point square head set screw, Flat point square head set screw, Dog point square head set screw, Cup point square head set screw, Cone point square head set screw |
Set screws (slotted) | Oval point slotted headless set screw, Half dog point slotted headless set screw, Flat point slotted headless set screw, Dog point slotted headless set screw, Cup point slotted headless set screw, Cone point slotted headless set screw |
Socket head screws | Socket countersunk head cap screw, Socket button head cap screw, Socket head cap screw, Socket head shoulder screw |
Lag screws | Hex lag screw, Square lag screw |
T-head bolts | T-head bolt |
Square head bolts | Askew head bolt, Countersunk elevator bolt, Square head bolt |
Round head bolts | Round head ribbed neck bolt, Round head step bolt, Round head fin neck bolt, Round head short square neck bolt, Round head square neck bolt, Round head bolt |
Tapping screws | Oval countersunk trim head tapping screw, Hex washer head tapping screw, Pan head tapping screw, Hex head tapping screw, Fillister head tapping screw, Flat countersunk trim head tapping screw, Oval countersunk head tapping screw, Oval undercut countersunk head tapping screw, Flat undercut countersunk head tapping screw, Flat countersunk head tapping screw |
Machine screws | Round head machine screw, Truss head machine screw, Flat countersunk head (100) machine screw, Binding head machine screw, Fillister head machine screw, Flat countersunk head (82) machine screw, Hex head machine screw, Hex washer machine screw, Oval countersunk head machine screw, Pan head machine screw |
Hex bolts | Hex cap screw, Hex flange bolt, Hex bolt, Heavy hex structural bolt, Heavy hex finished bolt, Heavy hex bolt |
Miniature screws | Pan head miniature screw, Countersunk flat head miniature screw, Fillister head oval crown miniature screw, Fillister head chamfered miniature screw, Binding head miniature screw |
Nuts
Hex slotted nuts | Hex slotted nut, Hex thick slotted nut, Heavy hex slotted nut |
Cap nuts | Acorn high, Acorn low crown nut, Acorn high crown nut |
Hex nuts | Hex jam nut, Hex thick nut, Hex nut, Hex flange nut, Heavy hex nut, Heavy hex jam nut |
T-slot nuts | T-slot nut |
Square nuts | Square nut, Heavy square nut |
Machine screw nuts | Square machine screw nut, Hex machine screw nut |
Hex flat nuts | Hex flat nut, Hex flat jam nut, Heavy hex flat nut, Heavy hex flat jam nut |
Washers
Spring lock washers | Extra-duty spring lock washer, Regular spring lock washer, High collar spring lock washer, Heavy-duty spring lock washer |
Toothed lock washers | Type B internal/external tooth lock washer, Type B heavy internal tooth lock washer, Type B external tooth lock washer, Type A internal/external tooth lock washer, Type A heavy internal tooth lock washer, Type A external tooth lock washer, Type B internal tooth lock washer, Type A internal tooth lock washer |
Type A plain washers | Type A flat washer |
Type B plain washers | Type B wide flat washer, Type B regular flat washer, Type B narrow flat washer |
Pins & Studs
Dowel & straight pins | Taper pin, Hardened ground machine dowel pin, Hardened ground production dowel pin, Ground dowel pin, Straight pin |
Spring pins | Slotted spring pin |
Cotter pins | Grooved T-head cotter pin |
Studs | Round-head grooved drive stud |
Retaining Rings
Internal retaining rings | Internal retaining ring |
External retaining rings | External retaining ring |
Shaft Keys
Parallel key | Standard parallel key ANSI B17.1 |
Tapered key | Tapered key ANSI B17.1 |
Bolts & Screws
Cross recess head screws | PH Pan head cross recess screw with collar DIN 967, PZ Raised countersunk head screw DIN EN ISO 7047, PH Raised countersunk head screw DIN EN ISO 7047, PZ Countersunk flat head screw DIN EN ISO 7046-1, PH Countersunk flat head screw DIN EN ISO 7046-1, PZ Pan head screw DIN EN ISO 7045, PH Pan head screw DIN EN ISO 7045, PZ Pan head cross recess screw with collar DIN 967 |
Self-tapping screws | Cross recessed oval head raised countersunk tapping screw DIN 7051, Cross recessed flat head countersunk tapping screw DIN 7050, Cross recessed pan head tapping screw DIN EN ISO 7049, Cross recessed pan head tapping screw with collar DIN 967 |
Miscellaneous bolts | Wing screw DIN 316 |
Slotted head screws | Slotted pan head screw with shoulder DIN 923, Slotted raised countersunk head screw DIN EN ISO 2010, Slotted countersunk flat head screw DIN EN ISO 2009, Slotted pan head screw DIN EN ISO 1580, Slotted cheese head screw DIN EN ISO 1207 |
Square head bolts | Square head bolt collar and dog point DIN 480, Square head bolt with short dog point DIN 479, Square head bolt with collar DIN 478 |
Socket head screws | Hex socket head cap screw DIN 912, Hex socket head cap screw DIN 7984, Hex socket head countersunk screw grade C DIN 7991 |
Eye bolts | Eye bolt DIN 444, Lifting eye bolt DIN 580 |
Set screws (hex head) | Hex set screw fine pitch with full dog point DIN 561, Hex set screw with full dog point DIN 561, Hex set screw fine pitch with half dog point and flat cone point DIN 564, Hex set screw with half dog point and flat cone point DIN 564 |
Set screws (hex socket) | Hex socket set screw with cone point DIN 914, Hex socket set screw with dog point DIN 915, Hex socket set screw with flat point DIN 913, Hex socket set screw with cup point DIN 916 |
Set screws (slotted) | Slotted set screw with cone point DIN EN 27434, Slotted set screw with dog point DIN EN 27435, Slotted set screw with flat point DIN EN 24766, Slotted set screw with cup point DIN EN 27436 |
Hex head bolts & screws | Hex bolt structural short grade C DIN 6914, Hex head structural bolt DIN 7990, Hex head bolt grade C DIN EN 24016, Hex head screw grade C DIN EN 24018, Hex head bolt grade C DIN 931-2, Hex head bolt grade B DIN EN 24015, Hex head bolt grade A & B fine pitch DIN EN 28765, Hex head screw grade A & B fine pitch DIN EN 28676, Hex head bolt grade A & B DIN EN 24014, Hex head screw grade A & B DIN EN 24017 |
Pins
Parallel pins | Parallel pin DIN EN ISO 8734, Parallel pin ISO 8734 |
Nuts
Hex nuts | Hex nut style 2 grade A & B DIN EN 24033, Hex nut style 2 grade A & B fine pitch DIN EN 28674, Hex thin nut fine pitch grade A & B DIN EN 28675, Hex thin nut grade A & B DIN EN 24035, Hex nut style 1 grade C DIN EN 24034, Hex nut style 1 grade A & B fine pitch DIN EN 28673, Hex nut style 1 grade A & B DIN EN 24032 |
Square nuts | Square nut grade C DIN 557, Square weld nut DIN 928, Square thin nut grade B DIN 562 |
Washers
Lock washers | Spring lock washer DIN 127 Type A, Spring lock washer DIN 127 Type B, Conical spring lock washer DIN 6908, Conical spring lock washer DIN 6796 |
Retaining Rings
Internal retaining rings | Internal retaining ring DIN 472, Internal heavy retaining ring DIN 472 |
External retaining rings | External retaining ring DIN 471, External heavy retaining ring DIN 471 |
Shaft Keys
Parallel key | Parallel key 6885-1 |
Tapered key | Tapered key 6883 |
Stressed tapered key | Stressed tapered key 6886 |
Bolts & Screws
Hex head bolts & screws | Hex bolt structural short grade C ISO 7412, Hex head bolt grade A & B fine pitch ISO 8765, Hex head screw grade A & B fine pitch ISO 8676, Hex structural bolt grade C ISO 7411, Hex flange bolt small ISO 4162, Hex head screw grade C ISO 4018, Hex head screw grade A & B ISO 4017, Hex head bolt grade C ISO 4016, Hex head bolt grade B ISO 4015, Hex head bolt grade A & B ISO 4014 |
Socket head screws | Socket button head screw ISO 7380, Socket head shoulder screw ISO 7379, Hex socket head cap screw ISO 4762, Hexalobular socket pan head screw ISO 14583, Hex socket countersunk head screw ISO 10642, Hexalobular socket cheese head screw ISO 14580 |
Set screws (hex socket) | Cone point hex socket set screw ISO 4027, Cup point hex socket set screw ISO 4029, Dog point hex socket set screw ISO 4028, Flat point hex socket set screw ISO 4026 |
Set screws (slotted) | Cup point slotted set screw ISO 7436, Dog point slotted set screw ISO 7435, Cone point slotted set screw ISO 7434, Flat point slotted set screw ISO 4766 |
Cross recess head screws | PZ Raised countersunk head screw ISO 7047, PH Raised countersunk head screw ISO 7047, PZ Countersunk flat head screw ISO 7046-1, PH Countersunk flat head screw ISO 7046-1, PZ Pan head screw ISO 7045, PH Pan head screw ISO 7045 |
Slotted head screws | Slotted raised countersunk head screw ISO 2010, Slotted countersunk flat head screw ISO 2009, Slotted pan head screw ISO 1580, Slotted cheese head screw ISO 1207 |
Self-tapping screws | Hexalobular socket countersunk self-tapping screw ISO 14586, Hexalobular socket pan head self-tapping screw ISO 14585 |
Nuts
Prevailing torque nuts fine pitch | Prevailing torque nut fine pitch ISO 10513, Prevailing torque nut fine pitch ISO 10512, Prevailing torque flange nut fine pitch ISO 12126, Prevailing torque flange nut fine pitch ISO 12125 |
Hex nuts fine pitch | Hex thin nut grade A & B fine pitch ISO 8675, Hex nut grade A & B fine pitch ISO 8674, Hex nut grade A & B fine pitch ISO 8673 |
Hex nuts | Hex nut structural grade A & B ISO 7413, Hex thin nut grade A & B ISO 4035, Hex structural nut grade A ISO 7417, Hex structural nut grade B ISO 7414, Hex structural nut grade B ISO 4775, Hex flange nut ISO 4161, Hex nut grade A & B ISO 4033, Hex nut grade C ISO 4034, Hex nut grade A & B ISO 4032 |
Prevailing torque hex nuts | Prevailing torque nut ISO 7720, Prevailing torque regular nut ISO 7719, Prevailing torque flange nut ISO 7044, Prevailing torque flange nut ISO 7043, Prevailing torque high nut ISO 7042, Prevailing torque nut ISO 7041, Prevailing torque nut ISO 7040, Prevailing torque nut thin ISO 10511 |
Washers
Plain washers hardened | Chamfered plain washer hardened ISO 7416, Plain washer hardened ISO 7415 |
Plain washers | Plain washer extra large grade C ISO 7094, Plain washer small grade A ISO 7092, Plain washer normal grade C ISO 7091, Chamfered plain washer normal ISO 7090, Plain washer small grade A ISO 10673, Plain washer normal grade A ISO 10673, Plain washer large grade A ISO 10673, Clevis pin plain washer ISO 8738, Plain washer large grade A ISO 7093-1, Plain washer normal grade A ISO 7089 |
O-rings
O-rings | ISO 3601-1 O-rings for industrial applications, ISO 3601-1:2012 O-rings for aerospace applications |
Sheet Metal Fasteners
Clinch nuts | Self-locking clinch nut with self-locking threads NASM 45938, Self-locking clinch nut without self-locking threads NASM 45938, Hex head self-locking clinch nut NASM 45938/2 |
Flush nuts | Self-clinching flush nut NASM 45938/4, Plain clinch flush nut NASM 3214 |
Standoffs | Self-clinching blind standoff NAS 1129, Self-clinching thru standoff NAS 1129 |
Unified
Self-clinching nuts | CLA™ Self-clinching nuts, HNL™ Prevailing torque locknuts, H™ NutsS-RT™ Free-running locknuts, SH™ Hard panel nuts, SL™ TRI-DENT® Prevailing torque locknuts, SMPS™/SMPP™ Nuts (For thin sheets), S™/SS™/CLS™/CLSS™/SP™ Self-clinching nuts |
Self-clinching studs | FH™/FHS™/FHA™ Flush-head studs, FH4™/FHP™ Flush-head studs for stainless steel sheets, FHL™/FHLS™ Flush, Low-displacement head studs, HFH™/HFHS™/HFHB™ Heavy-duty studs, HFE™/THFE™ Heavy-duty studs for thin sheets, HFG8™ Heavy-duty, high tensile strength studs, HFLH™ Hard panel studs, SGPC™ Swaging collar studs, TFH™/TFHS™ Non-flush studs |
Self-clinching pins | FH™/FHS™/FHA™ Flush-head pins, TPS™/TP4™ Flush-head pilot pins |
Self-clinching standoffs | BSO™/BSOS™/BSOA™/BSO4™ Blind threaded standoffs, DSOS™/DSO™ Threaded standoffs (for close-to-edge applications), SOSG™/SOAG™ Grounding standoffs, SO™/SOS™/SOA™/SO4™ Through-hole threaded standoffs, SO™/SOS™/SOA™/SO4™ Through-hole unthreaded standoffs, TSO™/TSOS™/TSOA™/TSO4™ Threaded standoffs for thin sheets |
Metric
Self-clinching nuts | CLA™ Self-clinching nuts, HNL™ Prevailing torque locknuts, H™ Nuts, S-RT™ Free-running locknuts, SH™ Hard panel nuts, SL™ TRI-DENT® Prevailing torque locknuts, SMPS™/SMPP™ Nuts (For thin sheets), S™/SS™/CLS™/CLSS™/SP™ Self-clinching nuts |
Self-clinching studs | FH™/FHS™/FHA™ Flush-head studs, FH4™/FHP™ Flush-head studs for stainless steel sheets, FHL™/FHLS™ Flush, Low-displacement head studs, TFH™/TFHS™ Non-flush studs, HFE™/THFE™ Heavy-duty studs for thin sheets, HFH™/HFHS™/HFHB™ Heavy-duty studs, HF109™ Heavy-duty, high tensile strength studs, HFLH™ Hard panel studs, SGPC™ Swaging collar studs, FHX™ Flush-head studs with X-Press™ thread profile |
Self-clinching pins | FH™/FHS™/FHA™ Flush-head pins, TPS™/TP4™ Flush-head pilot pins, TPXS™ Self-clinching pilot pins |
Self-clinching standoffs | BSO™/BSOS™/BSOA™/BSO4™ Blind threaded standoffs, DSOS™/DSO™ Threaded standoffs (For close-to-edge applications), SOSG™/SOAG™ Grounding standoffs, SO™/SOS™/SOA™/SO4™ Through-hole threaded standoffs, TSO™/TSOS™/TSOA™/TSO4™ Threaded standoffs for thin sheets, SO™/SOS™/SOA™/SO4™ Through-hole unthreaded standoffs |
O-rings
All O-rings | AS568 O-rings |
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Last Updated: November 13, 2020
American National Standard Machine Screws and Machine Screw Nuts
This Standard ANSI B18.6.3 covers both slotted and recessed head machine screws. Dimensions of various types of slotted machine screws, machine screw nuts, and header points are given in Tables 1 through 12. The Standard also covers flat trim head, oval trim head and drilled fillister head machine screws and gives cross recess dimensions and gaging dimensions for all types of machine screw heads. Information on metric machine screws B18.6.7M is given beginning on page 1708.
Threads
Except for sizes 0000, 000, and 00, machine screw threads may be either Unified Coarse (UNC) and Fine thread (UNF) Class 2A (see American Standard for Unified Screw Threads starting on page 1865) or UNRC and UNRF Series, at option of manufacturer. Thread dimensions for sizes 0000, 000, and 00 are given in Table 7 on page 1698.
Threads for hexagon machine screw nuts may be either UNC or UNF, Class 2B, and for square machine screw nuts are UNC Class 2B.
Length of Thread
Machine screws of sizes No. 5 and smaller with nominal lengths equal to 3 diameters and shorter have full form threads extending to within 1 pitch (thread) of the bearing surface of the head, or closer, if practicable. Nominal lengths greater than 3 diameters, up to and including 1 1⁄8 inch, have full form threads extending to within two pitches (threads) of the bearing surface of the head, or closer, if practicable. Unless otherwise specified, screws of longer nominal length have a minimum length of full form thread of 1.00 inch. Machine screws of sizes No. 6 and larger with nominal length equal to 3 diameters and shorter have full form threads extending to within 1 pitch (thread) of the bearing surface of the head, or closer, if practicable. Nominal lengths greater than 3 diameters, up to and including 2 inches, have full form threads extending to within 2 pitches (threads) of the bearing surface of the head, or closer, if practicable. Screws of longer nominal length, unless otherwise specified, have a minimum length of full form thread of 1.50 inches.
Table 1. Square and Hexagon Machine Screw Nuts ANSI B18.6.3-1972 (R1991)
All dimensions in inches. Hexagon machine screw nuts have tops flat and chamfered. Diameter of top circle should be the maximum width across flats within a tolerance of minus 15 percent. Bottoms are flat but may be chamfered if so specified. Square machine screw nuts have tops and bottoms flat without chamfer.
Diameter of Body
The diameter of machine screw bodies is not less than Class 2A thread minimum pitch diameter nor greater than the basic major diameter of the thread. Cross-recessed trim head machine screws not threaded to the head have an 0.062 in. minimum length shoulder under the head with diameter limits as specified in the dimensional tables in the standard.
Designation
Machine screws are designated by the following data in the sequence shown: Nominal size (number, fraction, or decimal equivalent); threads per inch; nominal length (fraction or decimal equivalent); product name, including head type and driving provision; header point, if desired; material; and protective finish, if required. For example:
- ¼ - 20 × 1 ¼ Slotted Pan Head Machine Screw, Steel, Zinc Plated
- 6 - 32 × ¾ Type IA Cross Recessed Fillister Head Machine Screw, Brass
Machine screw nuts are designated by the following data in the sequence shown: Nominal size (number, fraction, or decimal equivalent); threads per inch; product name; material; and protective finish, if required. For example:
- 10 - 24 Hexagon Machine Screw Nut, Steel, Zinc Plated
- 0.138 - 32 Square Machine Screw Nut, Brass
Table 2. American National Standard Slotted 100-Degree Flat Countersunk Head Machine Screws ANSI B18.6.3-1972 (R1977)
a When specifying nominal size in decimals, zeros preceding the decimal point and in the fourth decimal place are omitted.
All dimensions are in inches.
Table 3. American National Standard Slotted Flat Countersunk Head and Close Tolerance 100-Degree Flat Countersunk Head Machine Screws ANSI B18.6.3-1972 (R1991)
a When specifying nominal size in decimals, zeros preceding the decimal point and in the fourth decimal place are omitted.
b These lengths or shorter are undercut.
c May be rounded or flat.
All dimensions are in inches.
Table 4. American National Standard Slotted Undercut Flat Countersunk Head and Plain and Slotted Hex Washer Head Machine Screws ANSI B18.6.3-1972 (R1991)
a When specifying nominal size in decimals, zeros preceding the decimal point and in the fourth decimal place are omitted.
b These lengths or shorter are undercut.
a Unless otherwise specified, hexagon washer head machine screws are not slotted.
All dimensions are in inches.
Table 5. American National Standard Slotted Truss Head and Plain and Slotted Hexagon Head Machine Screws ANSI B18.6.3-1972 (R1991)
a Where specifying nominal size in decimals, zeros preceding decimal points and in the fourth decimal place are omitted.
a Unless otherwise specified, hexagon head machine screws are not slotted.
All dimensions are in inches.
Table 6. American National Standard Slotted Pan Head Machine Screws ANSI B18.6.3-1972 (R1991)
a Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place are omitted.
All dimensions are in inches.
Table 7. Nos. 0000, 000 and 00 Threads ANSI B18.6.3-1972 (R1991) Appendix
a Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place are omitted.
b There is no allowance provided on the external threads.
c The minor diameter limits for internal threads are not specified, they being determined by the amount of thread engagement necessary to satisfy the strength requirements and tapping performance in the intended application.
Fillister Head Wood Screws
All dimensions are in inches.
Table 8. American National Standard Slotted Fillister and Slotted Drilled Fillister Head Machine Screws ANSI B18.6.3-1972 (R1991)
All dimensions are in inches.
1 Where specifying nominal size in decimals, zeros preceding decimal points and in the fourth decimal place are omitted.
2 Drilled hole shall be approximately perpendicular to the axis of slot and may be permitted to break through bottom of the slot. Edges of the hole shall be free from burrs.
What Is Fillister Head Screw
3 A slight rounding of the edges at periphery of head is permissible provided the diameter of the bearing circle is equal to no less than 90 percent of the specified minimum head diameter.
Table 9. American National Standard Slotted Oval Countersunk Head Machine Screws ANSI B18.6.3-1972 (R1991)
a When specifying nominal size in decimals, zeros preceding decimal points and in the fourth decimal place are omitted.
b These lengths or shorter are undercut.
All dimensions are in inches.
Table 10. American National Standard Header Points for Machine Screws before Threading ANSI B18.6.3-1972 (R1991)
All dimensions in inches. Edges of point may be rounded and end of point need not be flat nor perpendicular to shank. Machine screws normally have plain sheared ends but when specified may have header points, as shown above.
Table 11. American National Standard Slotted Binding Head and Slotted Undercut Oval Countersunk Head Machine Screws ANSI B18.6.3-1972 (R1991)
a Where specifying nominal size in decimals, zeros preceding decimal points and in the fourth decimal place are omitted.
b Unless otherwise specified, slotted binding head machine screws are not undercut.
a These lengths or shorter are undercut.
All dimensions are in inches.
Table 12. Slotted Round Head Machine Screws ANSI B18.6.3-1972 (R1991) Appendix
a When specifying nominal size in decimals, zeros preceding decimal point and in the fourth decimal place are omitted.
All dimensions are in inches.
Not recommended, use Pan Head machine screws.
Machine Screw Cross Recesses
Four cross recesses, Types I, IA, II, and III, may be used in lieu of slots in machine screw heads. Dimensions for recess diameter M, width N, and depth T (not shown above) together with recess penetration gaging depths are given in American National Standard ANSI B18.6.3-1972 (R1991) for machine screws, and in ANSI/ASME B18.6.7M-1985 for metric machine screws.
ANSI Cross Recesses for Machine Screws and Metric Machine Screw
Summary
This article presents information about standard machine screws and nuts, including the different types and tables of sizes with key dimensions. Learn more about fasteners from the Machinery's Handbook, 30th Edition, which is published and available from Industrial Press on Amazon.
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