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Alloy Flat Head Screws

Flat Head Socket Cap Screws

Class 3A Thread Fit. Heat treated alloy steel. Black finish.
Lengths over 1" may not be threaded all the way to the head.
82 degree countersink head.
The length of the screw is OVERALL LENGTH, including the head.
Quantity Price Model Description Overall Length Diameter Threads per Inch Key

$4.50 SCFA-4-1/4
4-40 x 1/4 Alloy Flat Hd Screws-100 1/4" # 4 NC 40 1/16 Key

$4.60 SCFA-4-3/8
4-40 x 3/8 Alloy Flat Hd Screws-100 3/8 # 4 NC 40 1/16 Key

$4.80 SCFA-4-1/2
4-40 x 1/2 Alloy Flat Hd Screws-100 1/2 # 4 NC 40 1/16 Key

$5.00 SCFA-4-5/8
4-40 x 5/8 Alloy Flat Hd Screws-100 5/8 # 4 NC 40 1/16 Key

$5.50 SCFA-4-3/4
4-40 x 3/4 Alloy Flat Hd Screws-100 3/4 # 4 NC 40 1/16 Key

$4.70 SCFA-5-1/4
5-40 x 1/4 Alloy Flat Hd Screws-100 1/4" # 5 NC 40 5/64 Key

$4.70 SCFA-5-3/8
5-40 x 3/8 Alloy Flat Hd Screws-100 3/8 # 5 NC 40 5/64 Key

$4.80 SCFA-5-1/2
5-40 x 1/2 Alloy Flat Hd Screws-100 1/2 # 5 NC 40 5/64 Key

$5.00 SCFA-5-5/8
5-40 x 5/8 Alloy Flat Hd Screws-100 5/8 # 5 NC 40 5/64 Key

$5.50 SCFA-5-3/4
5-40 x 3/4 Alloy Flat Hd Screws-100 3/4 # 5 NC 40 5/64 Key

$4.80 SCFA-6-1/4
6-32 x 1/4 Alloy Flat Hd Screws-100 1/4" # 6 NC 32 5/64 Key

$4.90 SCFA-6-3/8
6-32 x 3/8 Alloy Flat Hd Screws-100 3/8 # 6 NC 32 5/64 Key

$5.00 SCFA-6-1/2
6-32 x 1/2 Alloy Flat Hd Screws-100 1/2 # 6 NC 32 5/64 Key

$5.20 SCFA-6-5/8
6-32 x 5/8 Alloy Flat Hd Screws-100 5/8 # 6 NC 32 5/64 Key

$5.60 SCFA-6-3/4
6-32 x 3/4 Alloy Flat Hd Screws-100 3/4 # 6 NC 32 5/64 Key

$4.90 SCFA-8-3/8
8-32 x 3/8 Alloy Flat Hd Screws-100 3/8" # 8 NC 32 3/32 Key

$5.10 SCFA-8-1/2
8-32 x 1/2 Alloy Flat Hd Screws-100 1/2 # 8 NC 32 3/32 Key

$5.50 SCFA-8-5/8
8-32 x 5/8 Alloy Flat Hd Screws-100 5/8 # 8 NC 32 3/32 Key

$5.60 SCFA-8-3/4
8-32 x 3/4 Alloy Flat Hd Screws-100 3/4 # 8 NC 32 3/32 Key

$6.40 SCFA-8-1
8-32 x 1 Alloy Flat Hd Screws-100 1" # 8 NC 32 3/32 Key

$5.00 SCFA-10-3/8
10/24 x 3/8 Alloy Flat Hd Screws-100 3/8" # 10 NC 24 1/8 Key

$5.20 SCFA-10-1/2
10/24 x 1/2 Alloy Flat Hd Screws-100 1/2 # 10 NC 24 1/8 Key

$5.40 SCFA-10-5/8
10/24 x 5/8 Alloy Flat Hd Screws-100 5/8 # 10 NC 24 1/8 Key

$5.70 SCFA-10-3/4
10/24 x 3/4 Alloy Flat Hd Screws-100 3/4 # 10 NC 24 1/8 Key

$6.40 SCFA-10-1
10/24 x 1 Alloy Flat Hd Screws-100 1" # 10 NC 24 1/8 Key

$7.60 SCFA-10-1-1/4
10/24 x 1-1/4 Alloy Flat Hd Screws-100 1 1/4 # 10 NC 24 1/8 Key

$8.90 SCFA-10-1-1/2
10/24 x 1-1/2 Alloy Flat Hd Screws-100 1 1/2 # 10 NC 24 1/8 Key

$5.00 SCFA-10F-3/8
10/32 x 3/8 Alloy Flat Hd Screws-100 3/8" # 10 NF 32 1/8 Key

$5.20 SCFA-10F-1/2
10/32 x 1/2 Alloy Flat Hd Screws-100 1/2 # 10 NF 32 1/8 Key

$5.40 SCFA-10F-5/8
10/32 x 5/8 Alloy Flat Hd Screws-100 5/8 # 10 NF 32 1/8 Key

$5.70 SCFA-10F-3/4
10/32 x 3/4 Alloy Flat Hd Screws-100 3/4 # 10 NF 32 1/8 Key

$6.40 SCFA-10F-1
10/32 x 1 Alloy Flat Hd Screws-100 1" # 10 NF 32 1/8 Key

$7.60 SCFA-10F-1-1/4
10/32 x 1-1/4 Alloy Flat Hd Screws-100 1 1/4 # 10 NF 32 1/8 Key

$8.90 SCFA-10F-1-1/2
10/32 x 1-1/2 Alloy Flat Hd Screws-100 1 1/2 # 10 NF 32 1/8 Key

$6.00 SCFA-14-3/8
1/4-20 x 3/8 Alloy Flat Hd Screws-100 3/8" 1/4" NC 20 5/32 Key

$5.70 SCFA-14-1/2
1/4-20 x 1/2 Alloy Flat Hd Screws-100 1/2 1/4" NC 20 5/32 Key

$6.00 SCFA-14-5/8
1/4-20 x 5/8 Alloy Flat Hd Screws-100 5/8 1/4" NC 20 5/32 Key

$6.30 SCFA-14-3/4
1/4-20 x 3/4 Alloy Flat Hd Screws-100 3/4 1/4" NC 20 5/32 Key

$7.60 SCFA-14-1
1/4-20 x 1 Alloy Flat Hd Screws-100 1" 1/4" NC 20 5/32 Key

$9.20 SCFA-14-1-1/4
1/4-20 x 1-1/4 Alloy Flat Hd Screws-100 1 1/4 1/4" NC 20 5/32 Key

$10.60 SCFA-14-1-1/2
1/4-20 x 1-1/2 Alloy Flat Hd Screws-100 1 1/2 1/4" NC 20 5/32 Key

$12.90 SCFA-14-1-3/4
1/4-20 x 1-3/4 Alloy Flat Hd Screws-100 1 3/4 1/4" NC 20 5/32 Key

$14.90 SCFA-14-2
1/4-20 x 2 Alloy Flat Hd Screws-100 2" 1/4" NC 20 5/32 Key

$8.00 SCFA-14F-3/8
1/4-28 x 3/8 Alloy Flat Hd Screws-100 3/8" 1/4" NF 28 5/32 Key

$8.00 SCFA-14F-1/2
1/4-28 x 1/2 Alloy Flat Hd Screws-100 1/2 1/4" NF 28 5/32 Key

$7.40 SCFA-14F-5/8
1/4-28 x 5/8 Alloy Flat Hd Screws-100 5/8 1/4" NF 28 5/32 Key

$8.20 SCFA-14F-3/4
1/4-28 x 3/4 Alloy Flat Hd Screws-100 3/4 1/4" NF 28 5/32 Key

$9.60 SCFA-14F-1
1/4-28 x 1 Alloy Flat Hd Screws-100 1" 1/4" NF 28 5/32 Key

$11.80 SCFA-14F-1-1/4
1/4-28 x 1-1/4 Alloy Flat Hd Screws-100 1 1/4 1/4" NF 28 5/32 Key

$15.40 SCFA-14F-1-1/2
1/4-28 x 1-1/2 Alloy Flat Hd Screws-100 1 1/2 1/4" NF 28 5/32 Key

$8.20 SCFA-56-1/2
5/16-18 x 1/2 Alloy Flat Hd Screws-100 1/2" 5/16" NC 18 3/16 Key

$9.40 SCFA-56-5/8
5/16-18 x 5/8 Alloy Flat Hd Screws-100 5/8 5/16" NC 18 3/16 Key

$10.00 SCFA-56-3/4
5/16-18 x 3/4 Alloy Flat Hd Screws-100 3/4 5/16" NC 18 3/16 Key

$12.80 SCFA-56-1
5/16-18 x 1 Alloy Flat Hd Screws-100 1" 5/16" NC 18 3/16 Key

$15.60 SCFA-56-1-1/4
5/16-18 x 1-1/4 Alloy Flat Hd Screws-100 1 1/4 5/16" NC 18 3/16 Key

$17.30 SCFA-56-1-1/2
5/16-18 x 1-1/2 Alloy Flat Hd Screws-100 1 1/2 5/16" NC 18 3/16 Key

$20.30 SCFA-56-1-3/4
5/16-18 x 1-3/4 Alloy Flat Hd Screws-100 1 3/4 5/16" NC 18 3/16 Key

$24.00 SCFA-56-2
5/16-18 x 2 Alloy Flat Hd Screws-100 2" 5/16" NC 18 3/16 Key

$28.10 SCFA-56-2-1/4
5/16-18 x 2-1/4 Alloy Flat Hd Screws-100 2 1/4 5/16" NC 18 3/16 Key

$31.40 SCFA-56-2-1/2
5/16-18 x 2-1/2 Alloy Flat Hd Screws-100 2 1/2 5/16" NC 18 3/16 Key

$11.00 SCFA-56F-1/2
5/16-24 x 1/2 Alloy Flat Hd Screws-100 1/2" 5/16" NF 24 3/16 Key

$11.30 SCFA-56F-5/8
5/16-24 x 5/8 Alloy Flat Hd Screws-100 5/8 5/16" NF 24 3/16 Key

$12.00 SCFA-56F-3/4
5/16-24 x 3/4 Alloy Flat Hd Screws-100 3/4 5/16" NF 24 3/16 Key

$15.20 SCFA-56F-1
5/16-24 x 1 Alloy Flat Hd Screws-100 1" 5/16" NF 24 3/16 Key

$18.50 SCFA-56F-1-1/4
5/16-24 x 1-1/4 Alloy Flat Hd Screws-100 1 1/4 5/16" NF 24 3/16 Key

$20.40 SCFA-56F-1-1/2
5/16-24 x 1-1/2 Alloy Flat Hd Screws-100 1 1/2 5/16" NF 24 3/16 Key

$20.40 SCFA-38-1/2
3/8-16 x 1/2 Alloy Flat Hd Screws-100 1/2" 3/8" NC 16 7/32 Key

$14.50 SCFA-38-5/8
3/8-16 x 5/8 Alloy Flat Hd Screws-100 5/8 3/8" NC 16 7/32 Key

$16.00 SCFA-38-3/4
3/8-16 x 3/4 Alloy Flat Hd Screws-100 3/4 3/8" NC 16 7/32 Key

$17.80 SCFA-38-1
3/8-16 x 1 Alloy Flat Hd Screws-100 1" 3/8" NC 16 7/32 Key

$22.90 SCFA-38-1-1/4
3/8-16 x 1-1/4 Alloy Flat Hd Screws-100 1 1/4 3/8" NC 16 7/32 Key

$24.30 SCFA-38-1-1/2
3/8-16 x 1-1/2 Alloy Flat Hd Screws-100 1 1/2 3/8" NC 16 7/32 Key

$30.60 SCFA-38-1-3/4
3/8-16 x 1-3/4 Alloy Flat Hd Screws-100 1 3/4 3/8" NC 16 7/32 Key

$33.90 SCFA-38-2
3/8-16 x 2 Alloy Flat Hd Screws-100 2" 3/8" NC 16 7/32 Key

$39.30 SCFA-38-2-1/4
3/8-16 x 2-1/4 Alloy Flat Hd Screws-100 2 1/4 3/8" NC 16 7/32 Key

$21.60 SCFA-38-2-1/2
3/8-16 x 2-1/2 Alloy Flat Hd Screws-50 2 1/2 3/8" NC 16 7/32 Key

$26.20 SCFA-38-3
3/8-16 x 3 Alloy Flat Hd Screws-50 3" 3/8" NC 16 7/32 Key

$27.60 SCFA-12-3/4
1/2-13 x 3/4 Alloy Flat Hd Screws-100 3/4" 1/2" NC 13 5/16 Key

$33.10 SCFA-12-1
1/2-13 x 1 Alloy Flat Hd Screws-100 1" 1/2" NC 13 5/16 Key

$38.90 SCFA-12-1-1/4
1/2-13 x 1-1/4 Alloy Flat Hd Screws-100 1 1/4 1/2" NC 13 5/16 Key

$42.00 SCFA-12-1-1/2
1/2-13 x 1-1/2 Alloy Flat Hd Screws-100 1 1/2 1/2" NC 13 5/16 Key

$25.80 SCFA-12-1-3/4
1/2-13 x 1-3/4 Alloy Flat Hd Screws-50 1 3/4 1/2" NC 13 5/16 Key

$27.30 SCFA-12-2
1/2-13 x 2 Alloy Flat Hd Screws-50 2" 1/2" NC 13 5/16 Key

$32.50 SCFA-12-2-1/4
1/2-13 x 2-1/4 Alloy Flat Hd Screws-50 2 1/4 1/2" NC 13 5/16 Key

$36.10 SCFA-12-2-1/2
1/2-13 x 2-1/2 Alloy Flat Hd Screws-50 2 1/2 1/2" NC 13 5/16 Key

$43.40 SCFA-12-3
1/2-13 x 3 Alloy Flat Hd Screws-50 3" 1/2" NC 13 5/16 Key

$35.00 SCFA-58-1-1/4
5/8-11 x 1-1/4 Alloy Flat Hd Screws-50 1 1/4" 5/8" NC 11 3/8 Key

$38.40 SCFA-58-1-1/2
5/8-11 x 1-1/2 Alloy Flat Hd Screws-50 1 1/2 5/8" NC 11 3/8 Key

$44.50 SCFA-58-1-3/4
5/8-11 x 1-3/4 Alloy Flat Hd Screws-50 1 3/4 5/8" NC 11 3/8 Key

$46.50 SCFA-58-2
5/8-11 x 2 Alloy Flat Hd Screws-50 2" 5/8" NC 11 3/8 Key

$27.40 SCFA-58-2-1/4
5/8-11 x 2-1/4 Alloy Flat Hd Screws-25 2 1/4 5/8" NC 11 3/8 Key

$29.70 SCFA-58-2-1/2
5/8-11 x 2-1/2 Alloy Flat Hd Screws-25 2 1/2 5/8" NC 11 3/8 Key

$35.70 SCFA-58-3
5/8-11 x 3 Alloy Flat Hd Screws-25 3" 5/8" NC 11 3/8 Key

Steel Hex Nuts

Zinc plated. 100 per box.
Fractional sizes 1/4" and larger are grade 8, class 2B.
Smaller sizes are not grade 8.
Quantity Price Model Description Size Thread

$2.00 HNN-2-56
#2-56 Steel Hex Nuts- Box of 100 2 56

$2.00 HNN-3-48
#3-48 Steel Hex Nuts- Box of 100 3 48

$2.00 HNN-4-40
#4-40 Steel Hex Nuts- Box of 100 4 40

$2.00 HNN-5-40
#5-40 Steel Hex Nuts- Box of 100 5 40

$2.00 HNN-6-32
#6-32 Steel Hex Nuts- Box of 100 6 32

$2.00 HNN-8-32
#8-32 Steel Hex Nuts- Box of 100 8 32

$2.00 HNN-10-24
#10-24 Steel Hex Nuts- Box of 100 10 24

$2.00 HNN-10-32
#10-32 Steel Hex Nuts- Box of 100 10 32

$5.20 HN-1/4-20
1/4-20 Grade 8 Steel Hex Nuts- Box of 100 1/4" 20

$5.20 HN-1/4-28
1/4-28 Grade 8 Steel Hex Nuts- Box of 100 1/4" 28

$7.90 HN-5/16-18
5/16-18 Grade 8 Steel Hex Nuts- Box of 100 5/16" 18

$7.90 HN-5/16-24
5/16-24 Grade 8 Steel Hex Nuts- Box of 100 5/16" 24

$11.60 HN-3/8-16
3/8-16 Grade 8 Steel Hex Nuts- Box of 100 3/8" 16

$11.60 HN-3/8-24
3/8-24 Grade 8 Steel Hex Nuts- Box of 100 3/8" 24

$17.00 HN-7/16-14
7/16-14 Grade 8 Steel Hex Nuts- Box of 100 7/16" 14

$19.30 HN-7/16-20
7/16-20 Grade 8 Steel Hex Nuts- Box of 100 7/16" 20

$23.20 HN-1/2-13
1/2-13 Grade 8 Steel Hex Nuts- Box of 100 1/2" 13

$25.00 HN-1/2-20
1/2-20 Grade 8 Steel Hex Nuts- Box of 100 1/2" 20

$22.30 HN-5/8-11
5/8-11 Grade 8 Steel Hex Nuts- Box of 50 5/8" 11

$24.50 HN-5/8-18
5/8-18 Grade 8 Steel Hex Nuts- Box of 50 5/8" 18

$36.30 HN-3/4-10
3/4-10 Grade 8 Steel Hex Nuts- Box of 50 3/4" 10

$38.30 HN-3/4-16
3/4-16 Grade 8 Steel Hex Nuts- Box of 50 3/4" 16