Flat-Head Quick-Release Pins

These pins have a low-profile head, so they won't get knocked out of place. Pins have a spring-loaded ball that pops out when the pin is pushed into a hole, and retracts when the pin is pulled out. For the best fit, the hole should be as close to the diameter as possible, but not larger than the diameter at extended ball height.

Zinc-plated steel pins have good strength and some corrosion resistance.

18-8 stainless steel pins offer a balance of strength and corrosion resistance. They may be mildly magnetic.

3D CAD models availableFor technical drawings and 3-D models, click on a part number.

Head

Usable Lg. Dia. Tolerance Dia. Ht. Dia. at Extended

Ball Ht. Min. Hardness Ball Material Pkg.

Qty. Pkg.

Zinc-Plated 1004-1045 Carbon Steel

3/16" Dia.

9/16" -0.005" to 0" 5/16" 1/16" 0.205" Rockwell B60 18-8 Stainless Steel 10 90156A501 $6.68

13/16" -0.005" to 0" 5/16" 1/16" 0.205" Rockwell B60 18-8 Stainless Steel 10 90156A204 8.38

1 1/16" -0.005" to 0" 5/16" 1/16" 0.205" Rockwell B60 18-8 Stainless Steel 10 90156A502 6.80

1 5/16" -0.005" to 0" 5/16" 1/16" 0.205" Rockwell B60 18-8 Stainless Steel 10 90156A208 8.21

1 13/16" -0.005" to 0" 5/16" 1/16" 0.205" Rockwell B60 18-8 Stainless Steel 10 90156A212 10.65

2 5/16" -0.005" to 0" 5/16" 1/16" 0.205" Rockwell B60 18-8 Stainless Steel 10 90156A216 13.07

1/4" Dia.

1/4" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 10 90156A503 6.89

1/2" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 10 90156A504 7.17

5/8" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 10 90156A505 7.22

3/4" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 10 90156A259 7.33

7/8" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 10 90156A506 7.25

1" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 10 90156A507 7.21

1 1/4" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 10 90156A263 6.68

1 1/2" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 10 90156A508 7.70

1 3/4" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 10 90156A267 8.87

2" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 5 90156A509 3.88

2 1/4" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 10 90156A271 8.48

2 3/4" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 10 90156A275 9.42

3 1/4" -0.005" to 0" 3/8" 3/32" 0.286" Rockwell B60 18-8 Stainless Steel 5 90156A511 4.51

5/16" Dia.

3/8" -0.005" to 0" 7/16" 3/32" 0.36" Rockwell B60 18-8 Stainless Steel 5 90156A512 4.05

1/2" -0.005" to 0" 7/16" 3/32" 0.36" Rockwell B60 18-8 Stainless Steel 5 90156A513 4.13

5/8" -0.005" to 0" 7/16" 3/32" 0.36" Rockwell B60 18-8 Stainless Steel 10 90156A402 8.90

3/4" -0.005" to 0" 7/16" 3/32" 0.36" Rockwell B60 18-8 Stainless Steel 5 90156A514 4.16

7/8" -0.005" to 0" 7/16" 3/32" 0.36" Rockwell B60 18-8 Stainless Steel 5 90156A515 4.24

1 1/8" -0.005" to 0" 7/16" 3/32" 0.36" Rockwell B60 18-8 Stainless Steel 10 90156A406 10.00

1 3/8" -0.005" to 0" 7/16" 3/32" 0.36" Rockwell B60 18-8 Stainless Steel 5 90156A516 4.51

1 5/8" -0.005" to 0" 7/16" 3/32" 0.36" Rockwell B60 18-8 Stainless Steel 5 90156A517 4.50

2 1/8" -0.005" to 0" 7/16" 3/32" 0.36" Rockwell B60 18-8 Stainless Steel 5 90156A518 4.70

2 5/8" -0.005" to 0" 7/16" 3/32" 0.36" Rockwell B60 18-8 Stainless Steel 5 90156A519 4.92

3/8" Dia.

3/8" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 5 90156A521 4.26

5/8" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 10 90156A276 8.22

3/4" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 5 90156A522 4.50

7/8" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 5 90156A523 4.63

1" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 1 90156A524 2.04

1 1/8" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 5 90156A525 4.70

1 1/4" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 5 90156A526 4.77

1 3/8" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 5 90156A527 4.92

1 5/8" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 10 90156A277 12.95

1 7/8" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 5 90156A528 5.24

2 1/8" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 5 90156A529 5.47

2 5/8" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 10 90156A285 14.08

3 1/8" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 5 90156A531 6.15

3 5/8" -0.005" to 0" 1/2" 1/8" 0.426" Rockwell B60 18-8 Stainless Steel 10 90156A293 15.98

7/16" Dia.

9/16" -0.005" to 0" 5/8" 5/32" 0.495" Rockwell B60 18-8 Stainless Steel 5 90156A532 6.15

13/16" -0.005" to 0" 5/8" 5/32" 0.495" Rockwell B60 18-8 Stainless Steel 5 90156A533 6.60

1 1/16" -0.005" to 0" 5/8" 5/32" 0.495" Rockwell B60 18-8 Stainless Steel 5 90156A534 6.83

1 5/16" -0.005" to 0" 5/8" 5/32" 0.495" Rockwell B60 18-8 Stainless Steel 5 90156A535 7.29

1 9/16" -0.005" to 0" 5/8" 5/32" 0.495" Rockwell B60 18-8 Stainless Steel 5 90156A536 7.51

2 1/16" -0.005" to 0" 5/8" 5/32" 0.495" Rockwell B60 18-8 Stainless Steel 5 90156A537 7.97

2 9/16" -0.005" to 0" 5/8" 5/32" 0.495" Rockwell B60 18-8 Stainless Steel 5 90156A538 8.65

1/2" Dia.

1/2" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 5 90156A539 7.97

3/4" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 5 90156A541 8.20

7/8" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 5 90156A542 8.43

1" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 10 90156A383 15.99

1 1/8" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 5 90156A543 8.65

1 1/4" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 5 90156A544 8.93

1 1/2" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 10 90156A387 15.77

1 3/4" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 1 90156A545 2.08

2" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 10 90156A391 21.01

2 1/2" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 10 90156A395 20.79

3" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 10 90156A399 20.51

3 1/2" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 1 90156A546 2.66

4" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 1 90156A547 3.03

4 1/2" -0.005" to 0" 5/8" 5/32" 0.559" Rockwell B60 18-8 Stainless Steel 1 90156A548 3.19

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