Lock Nuts - UNC
Sometimes written as lock nuts, they also go by various other names, including half nuts, jam nuts and thin nuts.
Locknuts are used to lock a full nut in position to prevent it from working loose as a result of vibration or other factors.
Locknuts are often mixed up with Nyloc nuts, which are different. Nyloc nuts are self-locking nuts that feature a nylon collar in the top portion of the nut that locks the nut in place.
About UNC Thread
UNC stands for Unified National Coarse. It is a common imperial thread type with less threads per axial distance than its UNF equivalent.
Unified thread types (UNF and UNC) were introduced at the beginning of World War 2 to enable the interchangeability of machinery manufacturing between the USA, Canada and Great Britain. Still commonly found on a vast array of old machines and vehicles in the UK, UNF and UNC threads continue to be the standard thread in the USA and Canada.
Threads Per Inch: | 20 |
Diameter: | 1/4" |
Material: | A2 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.161" |
Threads Per Inch: | 16 |
Diameter: | 3/8" |
Material: | A2 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.224" |
Threads Per Inch: | 14 |
Diameter: | 7/16" |
Material: | A2 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.255" |
Threads Per Inch: | 13 |
Diameter: | 1/2" |
Material: | A2 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.317" |
Threads Per Inch: | 11 |
Diameter: | 5/8" |
Material: | A2 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.38" |
Threads Per Inch: | 10 |
Diameter: | 3/4" |
Material: | A2 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Thickness: | 0.432" |
Threads Per Inch: | 20 |
Diameter: | 1/4" |
Material: | A4 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Thickness: | 0.161" |
Threads Per Inch: | 18 |
Diameter: | 5/16" |
Material: | A4 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Thickness: | 0.192" |
Threads Per Inch: | 16 |
Diameter: | 3/8" |
Material: | A4 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Thickness: | 0.224" |
Threads Per Inch: | 14 |
Diameter: | 7/16" |
Material: | A4 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Thickness: | 0.255" |
Threads Per Inch: | 13 |
Diameter: | 1/2" |
Material: | A4 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Thickness: | 0.317" |
Threads Per Inch: | 11 |
Diameter: | 5/8" |
Material: | A4 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Thickness: | 0.38" |
Threads Per Inch: | 10 |
Diameter: | 3/4" |
Material: | A4 Stainless Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Threads Per Inch: | 8 |
Diameter: | 1" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.562" |
Threads Per Inch: | 7 |
Diameter: | 1 1/8" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.629" |
Threads Per Inch: | 7 |
Diameter: | 1 1/4" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Thickness: | 0.744" |
Threads Per Inch: | 20 |
Grade: | Grade 1 |
Diameter: | 1/4" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.161" |
CODE: LNUCSC031
Threads Per Inch: | 18 |
Grade: | Grade 1 |
Diameter: | 5/16" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.192" |
CODE: LNUCSC037
Threads Per Inch: | 16 |
Grade: | Grade 1 |
Diameter: | 3/8" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.224" |
CODE: LNUCSC043
Threads Per Inch: | 14 |
Grade: | Grade 1 |
Diameter: | 7/16" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.255" |
CODE: LNUCSC050
Threads Per Inch: | 13 |
Grade: | Grade 1 |
Diameter: | 1/2" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.317" |
Threads Per Inch: | 11 |
Grade: | Grade 1 |
Diameter: | 5/8" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.38" |
Threads Per Inch: | 16 |
Grade: | Grade 1 |
Diameter: | 3/8" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.224" |
Threads Per Inch: | 11 |
Grade: | Grade 1 |
Diameter: | 5/8" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Specification: | BS 1768 |
Thickness: | 0.38" |
Threads Per Inch: | 16 |
Diameter: | 3/8" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Thickness: | 0.224" |
Threads Per Inch: | 11 |
Diameter: | 5/8" |
Material: | Steel |
Head Type: | Hex Head |
Thread Type: | Imperial - UNC |
Thickness: | 0.38" |
- Pack Size
- Diameter
- Finish
- Material
- Head Type
- Spanner Size
- Thickness
- Grade
- Threads Per Inch