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About Nuts, Materials, and Finishes
More
18-8 Stainless Steel Hex Nuts
These nuts have good chemical resistance and may be mildly magnetic.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Black-Oxide 18-8 Stainless Steel | |||||
|---|---|---|---|---|---|
| 0-80 | 5/32" | 3/64" | 100 | 000000000 | 000000 |
| 2-56 | 3/16" | 1/16" | 100 | 000000000 | 0000 |
| 4-40 | 1/4" | 3/32" | 100 | 000000000 | 0000 |
| 6-32 | 5/16" | 7/64" | 100 | 000000000 | 0000 |
| 6-40 | 5/16" | 7/64" | 50 | 000000000 | 0000 |
| 8-32 | 11/32" | 1/8" | 100 | 000000000 | 0000 |
| 8-36 | 11/32" | 1/8" | 50 | 000000000 | 0000 |
| 10-24 | 3/8" | 1/8" | 100 | 000000000 | 0000 |
| 10-32 | 3/8" | 1/8" | 100 | 000000000 | 0000 |
| 12-24 | 7/16" | 5/32" | 25 | 000000000 | 0000 |
| 12-28 | 7/16" | 5/32" | 25 | 000000000 | 0000 |
| 1/4"-20 | 7/16" | 7/32" | 50 | 000000000 | 0000 |
| 1/4"-28 | 7/16" | 7/32" | 50 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 17/64" | 25 | 000000000 | 0000 |
| 5/16"-24 | 1/2" | 17/64" | 25 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 21/64" | 25 | 000000000 | 0000 |
| 3/8"-24 | 9/16" | 21/64" | 25 | 000000000 | 0000 |
| 7/16"-14 | 11/16" | 3/8" | 10 | 000000000 | 0000 |
| 7/16"-20 | 11/16" | 3/8" | 10 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 7/16" | 10 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 7/16" | 10 | 000000000 | 0000 |
| 9/16"-12 | 7/8" | 31/64" | 5 | 000000000 | 0000 |
| 9/16"-18 | 7/8" | 31/64" | 5 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 35/64" | 5 | 000000000 | 0000 |
| 5/8"-18 | 15/16" | 35/64" | 5 | 000000000 | 0000 |
| 3/4"-10 | 1 1/8" | 41/64" | 1 | 000000000 | 0000 |
| 3/4"-16 | 1 1/8" | 41/64" | 1 | 000000000 | 0000 |
| 7/8"-9 | 1 5/16" | 3/4" | 1 | 000000000 | 0000 |
| 7/8"-14 | 1 5/16" | 3/4" | 1 | 000000000 | 0000 |
| 1"-8 | 1 1/2" | 55/64" | 1 | 000000000 | 0000 |
| 1"-12 | 1 1/2" | 55/64" | 1 | 000000000 | 0000 |
| 1 1/8"-7 | 1 11/16" | 31/32" | 1 | 000000000 | 0000 |
| 1 1/4"-7 | 1 7/8" | 1 1/16" | 1 | 000000000 | 0000 |
| 1 1/2"-6 | 2 1/4" | 1 9/32" | 1 | 000000000 | 00000 |
| 1 3/4"-5 | 2 5/8" | 1 1/2" | 1 | 000000000 | 00000 |
| 2"-4 1/2 | 3" | 1 23/32" | 1 | 000000000 | 00000 |
Metric 18-8 Stainless Steel Hex Nuts
These nuts have good chemical resistance and may be mildly magnetic. Metric 18-8 stainless steel is also known as A2 stainless steel.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||
|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide 18-8 Stainless Steel | |||||||
| M1 | 0.25 | 2.5 | 0.8 | DIN 934 | 5 | 000000000 | 000000 |
| M1.2 | 0.25 | 3 | 1 | DIN 934 | 5 | 000000000 | 0000 |
| M1.4 | 0.3 | 3 | 1.2 | DIN 934 | 5 | 000000000 | 0000 |
| M1.6 | 0.35 | 3.2 | 1.3 | DIN 934 | 5 | 000000000 | 0000 |
| M2 | 0.4 | 4 | 1.6 | DIN 934 | 100 | 000000000 | 00000 |
| M2.5 | 0.45 | 5 | 2 | DIN 934 | 100 | 000000000 | 00000 |
| M3 | 0.5 | 5.5 | 2.4 | DIN 934 | 100 | 000000000 | 0000 |
| M3.5 | 0.6 | 6 | 2.8 | DIN 934 | 10 | 000000000 | 0000 |
| M4 | 0.7 | 7 | 3.2 | DIN 934 | 100 | 000000000 | 0000 |
| M5 | 0.8 | 8 | 4 | DIN 934 | 100 | 000000000 | 0000 |
| M6 | 1 | 10 | 5 | DIN 934 | 50 | 000000000 | 0000 |
| M7 | 1 | 11 | 5.5 | DIN 934 | 10 | 000000000 | 0000 |
| M8 | 1.25 | 13 | 6.5 | DIN 934 | 50 | 000000000 | 0000 |
| M10 | 1.5 | 17 | 8 | DIN 934 | 25 | 000000000 | 0000 |
| M12 | 1.75 | 19 | 10 | DIN 934 | 25 | 000000000 | 00000 |
| M14 | 2 | 22 | 11 | DIN 934 | 10 | 000000000 | 0000 |
| M16 | 2 | 24 | 13 | DIN 934 | 10 | 000000000 | 0000 |
| M18 | 2.5 | 27 | 15 | DIN 934 | 5 | 000000000 | 0000 |
| M20 | 2.5 | 30 | 16 | DIN 934 | 5 | 000000000 | 0000 |
| M22 | 2.5 | 32 | 18 | DIN 934 | 5 | 000000000 | 00000 |
| M24 | 3 | 36 | 19 | DIN 934 | 5 | 000000000 | 00000 |
| M27 | 3 | 41 | 22 | DIN 934 | 1 | 000000000 | 0000 |
| M30 | 3.5 | 46 | 24 | DIN 934 | 1 | 000000000 | 00000 |
| M33 | 3.5 | 50 | 26 | DIN 934 | 1 | 000000000 | 00000 |
| M36 | 4 | 55 | 29 | DIN 934 | 1 | 000000000 | 00000 |
| M42 | 4.5 | 65 | 34 | DIN 934 | 1 | 000000000 | 00000 |
| M48 | 5 | 75 | 38 | DIN 934 | 1 | 000000000 | 00000 |
18-8 Stainless Steel Narrow Hex Nuts
These 18-8 stainless steel nuts have good chemical resistance and may be mildly magnetic. Also known as small-pattern hex nuts, they are about 20% narrower than standard hex nuts for use in tight spaces where standard hex nuts won’t fit.
Black-oxide nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
18-8 Stainless Steel Thin Hex Nuts
These nuts have good chemical resistance and may be mildly magnetic. Also known as jam nuts, they are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Black-Oxide 18-8 Stainless Steel | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 5/32" | 50 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 5/32" | 25 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 3/16" | 25 | 000000000 | 0000 |
| 5/16"-24 | 1/2" | 3/16" | 25 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 7/32" | 25 | 000000000 | 0000 |
| 3/8"-24 | 9/16" | 7/32" | 25 | 000000000 | 00000 |
| 1/2"-13 | 3/4" | 5/16" | 10 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 5/16" | 10 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 3/8" | 5 | 000000000 | 0000 |
| 5/8"-18 | 15/16" | 3/8" | 5 | 000000000 | 0000 |
| 3/4"-10 | 1 1/8" | 27/64" | 1 | 000000000 | 0000 |
| 3/4"-16 | 1 1/8" | 27/64" | 1 | 000000000 | 0000 |
Mil. Spec. 18-8 Stainless Steel Thin Hex Nuts
Choose these nuts for their adherence to strict military standards for material and construction. Made of 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic. Also known as jam nuts, they are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide 18-8 Stainless Steel | ||||||
|---|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 5/32" | Fed. Spec. FF-N-836, MIL-DTL-13924, MS35691-B3 | 1 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 5/32" | Fed. Spec. FF-N-836, MIL-DTL-13924, MS35691-B7 | 1 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 3/16" | Fed. Spec. FF-N-836, MIL-DTL-13924, MS35691-B11 | 1 | 000000000 | 0000 |
| 5/16"-24 | 1/2" | 3/16" | Fed. Spec. FF-N-836, MIL-DTL-13924, MS35691-B15 | 1 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 7/32" | Fed. Spec. FF-N-836, MIL-DTL-13924, MS35691-B19 | 1 | 000000000 | 0000 |
| 3/8"-24 | 9/16" | 7/32" | Fed. Spec. FF-N-836, MIL-DTL-13924, MS35691-B23 | 1 | 000000000 | 0000 |
| 7/16"-14 | 7/16" | 1/4" | Fed. Spec. FF-N-836, MIL-DTL-13924, MS35691-B27 | 1 | 000000000 | 00000 |
| 1/2"-13 | 3/4" | 5/16" | Fed. Spec. FF-N-836, MIL-DTL-13924, MS35691-B35 | 1 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 3/8" | Fed. Spec. FF-N-836, MIL-DTL-13924, MS35691-B51 | 1 | 000000000 | 00000 |
Super-Corrosion-Resistant 316
Stainless Steel Thin Hex Nuts
These nuts have excellent chemical resistance and can be used in saltwater environments. Also known as jam nuts, they are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Black-Oxide 316 Stainless Steel | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 5/32" | 25 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 5/32" | 25 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 3/16" | 25 | 000000000 | 0000 |
| 5/16"-24 | 1/2" | 3/16" | 25 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 7/32" | 10 | 000000000 | 0000 |
| 3/8"-24 | 9/16" | 7/32" | 10 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 5/16" | 5 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 5/16" | 5 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 3/8" | 5 | 000000000 | 00000 |
| 5/8"-18 | 15/16" | 3/8" | 1 | 000000000 | 0000 |
| 3/4"-10 | 1 1/8" | 27/64" | 1 | 000000000 | 0000 |
| 3/4"-16 | 1 1/8" | 27/64" | 1 | 000000000 | 0000 |
18-8 Stainless Steel Nylon-Insert Locknuts
These locknuts have good chemical resistance and may be mildly magnetic. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Black-Oxide 18-8 Stainless Steel | ||||||
|---|---|---|---|---|---|---|
| 2-56 | 1/4" | 9/64" | 220° | 50 | 000000000 | 000000 |
| 3-48 | 1/4" | 9/64" | 220° | 25 | 000000000 | 0000 |
| 4-40 | 1/4" | 9/64" | 220° | 100 | 000000000 | 0000 |
| 5-40 | 1/4" | 9/64" | 220° | 25 | 000000000 | 0000 |
| 6-32 | 5/16" | 11/64" | 220° | 100 | 000000000 | 0000 |
| 6-40 | 5/16" | 11/64" | 220° | 25 | 000000000 | 0000 |
| 8-32 | 11/32" | 15/64" | 220° | 100 | 000000000 | 0000 |
| 8-36 | 11/32" | 15/64" | 220° | 25 | 000000000 | 0000 |
| 10-24 | 3/8" | 15/64" | 220° | 100 | 000000000 | 0000 |
| 10-32 | 3/8" | 15/64" | 220° | 25 | 000000000 | 0000 |
| 12-24 | 7/16" | 5/16" | 220° | 25 | 000000000 | 00000 |
| 12-28 | 7/16" | 5/16" | 220° | 10 | 000000000 | 0000 |
| 1/4"-20 | 7/16" | 5/16" | 220° | 50 | 000000000 | 0000 |
| 1/4"-28 | 7/16" | 5/16" | 220° | 10 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 11/32" | 220° | 50 | 000000000 | 00000 |
| 5/16"-24 | 1/2" | 11/32" | 220° | 10 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 29/64" | 220° | 25 | 000000000 | 00000 |
| 3/8"-24 | 9/16" | 29/64" | 220° | 10 | 000000000 | 00000 |
| 7/16"-14 | 5/8" | 29/64" | 220° | 10 | 000000000 | 00000 |
| 7/16"-20 | 5/8" | 29/64" | 220° | 5 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 19/32" | 220° | 10 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 19/32" | 220° | 5 | 000000000 | 00000 |
| 9/16"-12 | 7/8" | 41/64" | 220° | 1 | 000000000 | 0000 |
| 9/16"-18 | 7/8" | 41/64" | 220° | 1 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 3/4" | 220° | 1 | 000000000 | 0000 |
| 3/4"-10 | 1 1/16" | 7/8" | 220° | 1 | 000000000 | 0000 |
| 3/4"-16 | 1 1/16" | 7/8" | 220° | 1 | 000000000 | 0000 |
Metric Stainless Steel Locknuts
with External-Tooth Lock Washer
These locknuts have good chemical resistance and may be mildly magnetic. Also known as Keps and K-Lock nuts, they have a free-spinning tooth lock washer that grips the material surface instead of threads for easy installation and mild vibration resistance. Height includes the thickness of the washer.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
Thread | Washer | |||||||
|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Material | OD, mm | Pkg. Qty. | Pkg. | |
Black-Oxide 18-8 Stainless Steel | ||||||||
| M3 | 0.5 | 5.5 | 3.3 | Black-Oxide 400 Stainless Steel | 6.5 | 25 | 000000000 | 00000 |
| M4 | 0.7 | 7 | 4.1 | Black-Oxide 400 Stainless Steel | 8.2 | 25 | 000000000 | 00000 |
| M5 | 0.8 | 8 | 5.2 | Black-Oxide 400 Stainless Steel | 9.5 | 25 | 000000000 | 00000 |
| M6 | 1 | 10 | 6.2 | Black-Oxide 400 Stainless Steel | 11.5 | 25 | 000000000 | 00000 |
Stainless Steel Flex-Top Locknuts for Heavy Vibration
These locknuts have good chemical resistance and may be mildly magnetic. Threads at the top of the nut expand to grip the bolt on all sides for a stronger hold than distorted-thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads.
Black-oxide locknuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Black-Oxide 18-8 Stainless Steel | |||||
|---|---|---|---|---|---|
| 8-32 | 11/32" | 1/4" | 5 | 000000000 | 00000 |
| 10-24 | 3/8" | 1/4" | 5 | 000000000 | 0000 |
| 10-32 | 3/8" | 1/4" | 5 | 000000000 | 0000 |
| 1/4"-20 | 7/16" | 19/64" | 5 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 23/64" | 1 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 15/32" | 1 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 39/64" | 1 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 39/64" | 1 | 000000000 | 0000 |
Metric 18-8 Stainless Steel Coupling Nuts
Made from 18-8 stainless steel, these metric coupling nuts have good chemical resistance and may be mildly magnetic. Also known as extension nuts, use them to connect and extend threaded rods.
Coupling nuts with a black-oxide finish have a dark surface color.
For technical drawings and 3-D models, click on a part number.
Thread | Each | ||||||
|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Lg., mm | Wd., mm | Specifications Met | 1-9 | 10-Up | |
Black-Oxide 18-8 Stainless Steel | |||||||
| M2 | 0.4 | 6 | 4 | __ | 000000000 | 00000 | 00000 |
| M2.5 | 0.45 | 6 | 4 | __ | 000000000 | 0000 | 0000 |
| M3 | 0.5 | 9 | 5 | __ | 000000000 | 0000 | 0000 |
| M4 | 0.7 | 12 | 8 | DIN 6334 | 000000000 | 0000 | 0000 |
| M5 | 0.8 | 15 | 8 | DIN 6334 | 000000000 | 0000 | 0000 |
| M6 | 1 | 18 | 10 | DIN 6334 | 000000000 | 0000 | 0000 |
| M8 | 1.25 | 24 | 13 | DIN 6334 | 000000000 | 0000 | 0000 |
| M10 | 1.5 | 30 | 17 | DIN 6334 | 000000000 | 00000 | 00000 |
| M12 | 1.75 | 36 | 19 | DIN 6334 | 000000000 | 00000 | 00000 |
| M14 | 2 | 42 | 22 | DIN 6334 | 000000000 | 00000 | 00000 |
| M16 | 2 | 48 | 24 | DIN 6334 | 000000000 | 00000 | 00000 |
| M18 | 2.5 | 54 | 27 | DIN 6334 | 000000000 | 00000 | 00000 |
| M20 | 2.5 | 60 | 30 | DIN 6334 | 000000000 | 00000 | 00000 |
| M22 | 2.5 | 66 | 32 | DIN 6334 | 000000000 | 00000 | 00000 |
| M24 | 3 | 72 | 36 | DIN 6334 | 000000000 | 00000 | 00000 |
| M27 | 3 | 81 | 41 | __ | 000000000 | 00000 | 00000 |
| M30 | 3.5 | 90 | 46 | DIN 6334 | 000000000 | 00000 | 00000 |