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Socket Set Screw
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Socket Set Screw

Socket Set Screw

ASTM F912 Hex Socket Set Screws are a headless fastener threaded its entire length (except for the point) used commonly for fastening mated parts such as a shaft and collar. The F912 specification covers the requirements for quenched and tempered alloy steel socket set screws. Dimensional specifications are governed by ASME B18.3. These set screws are intended for compression applications only and are not customarily subjected to embrittlement tests. The socket set screw's headless design allows the fastener to sit flush, or inset into the threaded part.

 

Governing StandardsAlloy Steel Socket Set Screw

ASTM F912 This specification covers the requirements for quenched and tempered alloy steel socket-set screws (SSS) in nominal diameters 0.060 through 2 in. having hardnesses 45 to 53 HRC.
ASME B18.3 Covers the complete general and dimensional data for various types of hexagon socket cap screws, shoulder screws, set screws, and hexagon keys recognized as an American National Standard.
ASME B1.1 UNC & UNF Class 2A Specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads.

Alloy Steel Socket Set Screw Marking
Alloy Steel Socket Set Screw requires no material marking

Mechanical PropertiesAlloy Steel Socket Set Screw

Per ASTM F912-11
Alloy Steel,
Quenched &
Tempered		 Rockwell Hardness
Limits
45 to 53 HRC

Chemical PropertiesAlloy Steel Socket Set Screw

Per ASTM F912-11
Heat Analysis Product Analysis
Carbon Phosphorus Sulfur Carbon Phosphorus Sulfur
% by weight % by weight % by weight % by weight % by weight % by weight
0.30 to 0.48 0.035 0.040 0.28 to 0.50 0.04 0.045

Dimensional SpecificationsAlloy Steel Socket Set Screw

Socket Set Screw dimensions
Per ASME B18.3-2012
Size Nominal UNC UNF J T C Oval Point
Radius		 Cone Point
Angles
Hex Socket Size Key
Engagement		 Cup & Flat Point
Diameters
Fraction
Nominal		 Decimal
Nominal		 Min Max Min Basic 90 Deg
Lengths
#0 0.0600   80 …. 0.0280 0.0500 0.0330 0.0270 0.0450 0.0900
#1 0.0730 64 72 …. 0.0350 0.0600 0.0400 0.0330 0.0550 0.0900
#2 0.0860 56 64 …. 0.0350 0.0600 0.0470 0.0390 0.0640 0.1300
#3 0.0990 48 56 …. 0.0500 0.0700 0.0540 0.0445 0.0740 0.1300
#4 0.1120 40 48 …. 0.0500 0.0700 0.0610 0.0510 0.0840 0.1900
#5 0.1250 40 44 1/8 0.0620 0.0800 0.0670 0.0570 0.0940 0.1900
#6 0.1380 32 40 1/8 0.0620 0.0800 0.0740 0.0640 0.1040 0.1900
#8 0.1640 32 36 5/64 0.0780 0.0900 0.0870 0.0760 0.1230 0.2500
#10 0.1900 24 32 3/32 0.0940 0.1000 0.1020 0.0880 0.1420 0.2500
1/4 0.2500 20 28 1/8 0.1250 0.1250 0.1320 0.0118 0.1880 0.3100
5/16 0.3125 18 24 5/32 0.1560 0.1560 0.1720 0.1560 0.2340 0.3800
3/8 0.3750 16 24 3/16 0.1880 0.1880 0.2120 0.1940 0.2810 0.4400
7/16 0.4375 14 20 7/32 0.2190 0.2190 0.2520 0.2320 0.3280 0.5000
1/2 0.5000 13 20 1/4 0.2500 0.2500 0.2910 0.2700 0.3750 0.5700
5/8 0.6250 11 18 5/16 0.3120 0.3120 0.3710 0.3470 0.4690 0.7500
3/4 0.7500 10 16 3/8 0.3750 0.3750 0.4500 0.4250 0.5620 0.8800
7/8 0.8750 9 14 1/2 0.5000 0.5000 0.5300 0.5020 0.6560 1.0000
1 1.0000 8 14 9/16 0.5620 0.5620 0.6090 0.5790 0.7500 1.1300
1 1/8 1.1250 7 12 9/16 0.5620 0.5620 0.6890 0.6550 0.8440 1.2500
1 1/4 1.2500 7 12 5/8 0.6250 0.6250 0.7670 0.7330 0.9380 1.5000
1 3/8 1.3750 7 12 5/8 0.6250 0.6250 0.8480 0.8080 1.0310 1.6300
1 1/2 1.5000 6 12 3/4 0.7500 0.7500 0.9260 0.8860 1.1250 1.7500
1 3/4 1.7500 5 12 1 1.0000 1.0000 1.0890 1.0390 1.3120 2.0000
2 2.0000 4 12 1 1.0000 1.0000 1.2440 1.1930 1.5000 2.2500
  1. All dimensions are in inches.
Socket Set Screw
View
Diameter Thread Pitch Length Item # Availability Price Quantity UOM
#4 40 3/16 SSSA4400018 In Stock $0.07399/EA EA
#4 40 1/4 SSSA4400025 In Stock $0.07399/EA EA
#4 40 5/16 SSSA4400031 In Stock $0.08953/EA EA
#4 40 3/8 SSSA4400037 In Stock $0.07399/EA EA
#4 40 1/2 SSSA4400050 In Stock $0.07399/EA EA
#4 40 5/8 SSSA4400062 In Stock $0.11099/EA EA
#4 48 1/4 SSSA4480025 In Stock $0.19545/EA EA
#5 40 3/16 SSSA5400018 In Stock $0.07399/EA EA
#5 40 1/4 SSSA5400025 In Stock $0.07862/EA EA
#5 40 5/16 SSSA5400031 In Stock $0.07399/EA EA
#5 40 3/8 SSSA5400037 In Stock $0.07399/EA EA
#5 40 1/2 SSSA5400050 In Stock $0.13411/EA EA
#5 40 5/8 SSSA5400062 In Stock $0.11099/EA EA
#5 40 3/4 SSSA5400075 In Stock $0.18498/EA EA
#5 44 1/4 SSSA5440025 In Stock $0.10359/EA EA
#6 32 3/16 SSSA6320018 In Stock $0.07717/EA EA
#6 32 1/4 SSSA6320025 In Stock $0.08398/EA EA
#6 32 5/16 SSSA6320031 In Stock $0.11831/EA EA
#6 32 3/8 SSSA6320037 In Stock $0.08472/EA EA
#6 32 1/2 SSSA6320050 In Stock $0.07399/EA EA
#6 32 5/8 SSSA6320062 In Stock $0.11099/EA EA
#6 32 3/4 SSSA6320075 In Stock $0.11099/EA EA
#6 32 7/8 SSSA6320087 In Stock $0.11099/EA EA
#6 32 1 SSSA6320100 In Stock $0.14798/EA EA
#6 40 3/16 SSSA6400018 In Stock $0.07651/EA EA
#6 40 1/4 SSSA6400025 In Stock $0.15668/EA EA
#6 40 3/8 SSSA6400037 In Stock $0.08028/EA EA
#6 40 3/4 SSSA6400075 In Stock $0.07325/EA EA
#8 32 3/16 SSSA8320018 In Stock $0.08054/EA EA
#8 32 1/4 SSSA8320025 In Stock $0.08287/EA EA
#8 32 5/16 SSSA8320031 In Stock $0.08968/EA EA
#8 32 3/8 SSSA8320037 In Stock $0.18498/EA EA
#8 32 7/16 SSSA8320043 In Stock $0.03341/EA EA
#8 32 1/2 SSSA8320050 In Stock $0.13145/EA EA
#8 32 5/8 SSSA8320062 In Stock $0.07399/EA EA
#8 32 3/4 SSSA8320075 In Stock $0.23/EA EA
#8 32 7/8 SSSA8320087 In Stock $0.11099/EA EA
#8 32 1 SSSA8320100 In Stock $0.18128/EA EA
#8 36 3/16 SSSA8360018 In Stock $0.11424/EA EA
#8 36 1/4 SSSA8360025 In Stock $0.07466/EA EA
#8 36 5/16 SSSA8360031 In Stock $0.13762/EA EA
#8 36 3/8 SSSA8360037 In Stock $0.09526/EA EA
#10 24 3/16 SSSA1020018 In Stock $0.06474/EA EA
#10 24 1/4 SSSA1020025 In Stock $0.06437/EA EA
#10 24 5/16 SSSA1020031 In Stock $0.07399/EA EA
#10 24 3/8 SSSA1020037 In Stock $0.09108/EA EA
#10 24 1/2 SSSA1020050 In Stock $0.08879/EA EA
#10 24 5/8 SSSA1020062 In Stock $0.12745/EA EA
#10 24 3/4 SSSA1020075 In Stock $0.11358/EA EA
#10 24 7/8 SSSA1020087 In Stock $0.11099/EA EA
#10 24 1 SSSA1020100 In Stock $0.20881/EA EA
#10 24 1 1/4 SSSA1020125 In Stock $0.18498/EA EA
#10 32 3/16 SSSA1030018 In Stock $0.05601/EA EA
#10 32 1/4 SSSA1030025 In Stock $0.07174/EA EA
#10 32 5/16 SSSA1030031 In Stock $0.05768/EA EA
#10 32 5/8 SSSA1030062 In Stock $0.12394/EA EA
#10 32 3/4 SSSA1030075 In Stock $0.12457/EA EA
#10 32 7/8 SSSA1030087 In Stock $0.11099/EA EA
#10 32 1 SSSA1030100 In Stock $0.26238/EA EA
#10 32 1 1/4 SSSA1030125 In Stock $0.41228/EA EA
1/4 20 3/16 SSSA0250018 In Stock $0.12309/EA EA
1/4 20 1/4 SSSA0250025 In Stock $0.09782/EA EA
1/4 20 5/16 SSSA0250031 In Stock $0.0815/EA EA
1/4 20 3/8 SSSA0250037 In Stock $0.07495/EA EA
1/4 20 7/16 SSSA0250043 In Stock $0.08753/EA EA
1/4 20 1/2 SSSA0250050 In Stock $0.11669/EA EA
1/4 20 5/8 SSSA0250062 In Stock $0.08468/EA EA
1/4 20 3/4 SSSA0250075 In Stock $0.14269/EA EA
1/4 20 7/8 SSSA0250087 In Stock $0.21125/EA EA
1/4 20 1 SSSA0250100 In Stock $0.22889/EA EA
1/4 20 1 1/4 SSSA0250125 In Stock $0.13034/EA EA
1/4 20 1 1/2 SSSA0250150 In Stock $0.33755/EA EA
1/4 20 1 3/4 SSSA0250175 In Stock $0.65723/EA EA
1/4 20 2 SSSA0250200 In Stock $1.04225/EA EA
1/4 28 3/16 SSSA0250018NF In Stock $0.08106/EA EA
1/4 28 1/4 SSSA0250025NF In Stock $0.07321/EA EA
1/4 28 5/16 SSSA0250031NF In Stock $0.09279/EA EA
1/4 28 3/8 SSSA0250037NF In Stock $0.09438/EA EA
1/4 28 7/16 SSSA0250043NF In Stock $0.07399/EA EA
1/4 28 1/2 SSSA0250050NF In Stock $0.09686/EA EA
1/4 28 5/8 SSSA0250062NF In Stock $0.14876/EA EA
1/4 28 3/4 SSSA0250075NF In Stock $0.14547/EA EA
1/4 28 1 SSSA0250100NF In Stock $0.19245/EA EA
1/4 28 1 1/4 SSSA0250125NF In Stock $0.33296/EA EA
5/16 18 1/4 SSSA0310025 In Stock $0.13/EA EA
5/16 18 5/16 SSSA0310031 In Stock $0.13714/EA EA
5/16 18 3/8 SSSA0310037 In Stock $0.14798/EA EA
5/16 18 1/2 SSSA0310050 In Stock $0.15668/EA EA
5/16 18 5/8 SSSA0310062 In Stock $0.18498/EA EA
5/16 18 3/4 SSSA0310075 In Stock $0.21395/EA EA
5/16 18 1 SSSA0310100 In Stock $0.32301/EA EA
5/16 18 1 1/4 SSSA0310125 In Stock $0.504/EA EA
5/16 24 5/16 SSSA0310031NF In Stock $0.12775/EA EA
5/16 24 1/2 SSSA0310050NF In Stock $0.13711/EA EA
5/16 24 5/8 SSSA0310062NF In Stock $0.38698/EA EA
5/16 24 3/4 SSSA0310075NF In Stock $0.19623/EA EA
5/16 24 1 SSSA0310100NF In Stock $0.66515/EA EA
3/8 16 1/4 SSSA0370025 In Stock $0.23156/EA EA
3/8 16 5/16 SSSA0370031 In Stock $0.17862/EA EA
3/8 16 3/8 SSSA0370037 In Stock $0.20733/EA EA
3/8 16 7/16 SSSA0370043 In Stock $0.14798/EA EA
3/8 16 1/2 SSSA0370050 In Stock $0.20858/EA EA
3/8 16 5/8 SSSA0370062 In Stock $0.20751/EA EA
3/8 16 3/4 SSSA0370075 In Stock $0.30829/EA EA
3/8 16 1 SSSA0370100 In Stock $0.51287/EA EA
3/8 16 1 1/4 SSSA0370125 In Stock $0.49401/EA EA
3/8 16 1 1/2 SSSA0370150 In Stock $0.61454/EA EA
3/8 16 2 SSSA0370200 In Stock $0.70292/EA EA
3/8 16 2 1/2 SSSA0370250 In Stock $1.29693/EA EA
3/8 24 5/16 SSSA0370031NF In Stock $0.14798/EA EA
3/8 24 3/8 SSSA0370037NF In Stock $0.17592/EA EA
3/8 24 1/2 SSSA0370050NF In Stock $0.20266/EA EA
3/8 24 5/8 SSSA0370062NF In Stock $0.28117/EA EA
3/8 24 3/4 SSSA0370075NF In Stock $0.27913/EA EA
3/8 24 1 SSSA0370100NF In Stock $0.38394/EA EA
7/16 14 3/8 SSSA0430037 In Stock $0.35276/EA EA
7/16 14 7/16 SSSA0430043 In Stock $0.31003/EA EA
7/16 14 1/2 SSSA0430050 In Stock $0.34158/EA EA
7/16 14 3/4 SSSA0430075 In Stock $0.51025/EA EA
7/16 14 1 SSSA0430100 In Stock $0.68975/EA EA
7/16 14 1 1/4 SSSA0430125 In Stock $0.69182/EA EA
7/16 14 1 1/2 SSSA0430150 In Stock $2.00673/EA EA
7/16 20 7/16 SSSA0430043NF In Stock $0.29967/EA EA
7/16 20 1/2 SSSA0430050NF In Stock $0.43063/EA EA
7/16 20 3/4 SSSA0430075NF In Stock $0.64595/EA EA
7/16 20 1 SSSA0430100NF In Stock $1.1138/EA EA
1/2 13 3/8 SSSA0500037 In Stock $0.36515/EA EA
1/2 13 1/2 SSSA0500050 In Stock $0.40466/EA EA
1/2 13 5/8 SSSA0500062 In Stock $0.60318/EA EA
1/2 13 3/4 SSSA0500075 In Stock $0.53977/EA EA
1/2 13 7/8 SSSA0500087 In Stock $0.45734/EA EA
1/2 13 1 SSSA0500100 In Stock $0.77484/EA EA
1/2 13 1 1/4 SSSA0500125 In Stock $0.81461/EA EA
1/2 13 1 1/2 SSSA0500150 In Stock $0.96929/EA EA
1/2 13 2 SSSA0500200 In Stock $1.70118/EA EA
1/2 13 2 1/4 SSSA0500225 In Stock $2.65853/EA EA
1/2 13 2 1/2 SSSA0500250 In Stock $1.03589/EA EA
1/2 13 3 SSSA0500300 In Stock $3.16622/EA EA
1/2 20 1/2 SSSA0500050NF In Stock $0.3468/EA EA
1/2 20 5/8 SSSA0500062NF In Stock $0.44617/EA EA
1/2 20 3/4 SSSA0500075NF In Stock $0.51972/EA EA
1/2 20 1 SSSA0500100NF In Stock $0.70725/EA EA
1/2 20 1 1/4 SSSA0500125NF In Stock $1.29486/EA EA
1/2 20 1 1/2 SSSA0500150NF In Stock $0.037/EA EA
5/8 11 1/2 SSSA0620050 In Stock $0.82656/EA EA
5/8 11 5/8 SSSA0620062 In Stock $0.70888/EA EA
5/8 11 3/4 SSSA0620075 In Stock $0.56027/EA EA
5/8 11 7/8 SSSA0620087 In Stock $0.93722/EA EA
5/8 11 1 SSSA0620100 In Stock $1.51683/EA EA
5/8 11 1 1/4 SSSA0620125 In Stock $1.06038/EA EA
5/8 11 1 1/2 SSSA0620150 In Stock $1.38254/EA EA
5/8 11 1 3/4 SSSA0620175 In Stock $2.09319/EA EA
5/8 11 2 SSSA0620200 In Stock $3.89937/EA EA
5/8 11 3 SSSA0620300 In Stock $5.16093/EA EA
5/8 18 5/8 SSSA0620062NF 3-5 Working Days $0.69922/EA EA
5/8 18 3/4 SSSA0620075NF In Stock $1.18879/EA EA
3/4 10 5/8 SSSA0750062 In Stock $2.00962/EA EA
3/4 10 3/4 SSSA0750075 In Stock $1.8734/EA EA
3/4 10 1 SSSA0750100 In Stock $2.51957/EA EA
3/4 10 1 1/4 SSSA0750125 In Stock $1.74835/EA EA
3/4 10 1 1/2 SSSA0750150 In Stock $2.29593/EA EA
3/4 10 1 3/4 SSSA0750175 In Stock $1.96078/EA EA
3/4 10 2 SSSA0750200 In Stock $2.10877/EA EA
3/4 10 2 1/2 SSSA0750250 In Stock $4.51228/EA EA
3/4 10 3 SSSA0750300 In Stock $7.05782/EA EA
3/4 10 3 1/2 SSSA0750350 In Stock $7.99112/EA EA
3/4 16 3/4 SSSA0750075NF In Stock $1.47843/EA EA
7/8 9 7/8 SSSA0870087 In Stock $6.26563/EA EA
7/8 9 1 SSSA0870100 In Stock $5.63219/EA EA
7/8 9 1 1/2 SSSA0870150 In Stock $5.84099/EA EA
7/8 9 2 SSSA0870200 In Stock $9.24669/EA EA
1 8 1 SSSA1000100 In Stock $7.22653/EA EA
1 8 1 1/2 SSSA1000150 In Stock $10.28165/EA EA
1 8 2 SSSA1000200 In Stock $8.65538/EA EA
1 8 2 1/2 SSSA1000250 In Stock $10.1539/EA EA
1 8 3 SSSA1000300 In Stock $14.77063/EA EA
1 8 4 SSSA1000400 In Stock $32.66741/EA EA
1 14 1 SSSA1000100NF In Stock $10.22294/EA EA