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Product Specifications:
| Item | Hex Locknut |
| Dimensional Standards | B18.16.6 |
| Finish | Chrome Plated |
| Grade | Grade 2 |
| Hex Height | 5/16" |
| Hex Type | Standard Hex |
| Hex Width | 7/16" |
| Insert Material | Nylon |
| Lock Type | Nylon Insert |
| Material | Steel |
| Material Grade/class | Grade 2 |
| Material Quality Standards | Aisi 1008-1010 |
| Nut Height | 5/16" |
| Nut Type | Nylon Insert Lock Nut |
| Nut Type | Nylon Insert |
| System Of Measurement | Imperial |
| Thread Direction | Right Hand |
| Thread Size | 1/4"-20 |
| Thread Type | Coarse |
| Type | Standard Hex |
Shipping Info:
| Ship weight (kg) | 0.04 |
| Ship height (cm) | 1.27 |
| Ship length (cm) | 12.7 |
| Ship width (cm) | 1.27 |
| HS code | 7318160085 |
| Country of Origin | TW |
Product Variants
| Product | Model | Hex Width | Nut Height | Hex Height | Thread Direction | Material Grade/class | Insert Material | Material Quality Standards | Lock Type | Pkg. Qty. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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MPB3259 | 5/8" | 0.453" | 15/32" | Right Hand | Grade 2 | Nylon | Aisi 1008-1010 | Nylon Insert | 5 | €13.40 | |
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MPB3256 | 1/2" | 11/32" | 11/32" | Right Hand | Grade 2 | Nylon | Aisi 1008-1010 | Nylon Insert | 5 | €10.18 | |
![]() |
MPB278H | 9/16" | 0.453" | 15/32" | Right Hand | Grade 2 | Nylon | Aisi 1008-1010 | Nylon Insert | 5 | €12.39 | |
![]() |
MPB3258 | 5/8" | 0.453" | 15/32" | Right Hand | Grade 2 | Nylon | Aisi 1008-1010 | Nylon Insert | 5 | €13.40 | |
![]() |
MPB3251 | 3/8" | 15/64" | 15/64" | Right Hand | Grade 2 | Nylon | Aisi 1008-1010 | Nylon Insert | 5 | €9.40 | |
![]() |
MPB3252 | 3/8" | 15/64" | 15/64" | Right Hand | Grade 2 | Nylon | Aisi 1008-1010 | Nylon Insert | 5 | €9.40 | |
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MPB3255 | 1/2" | 11/32" | 11/32" | Right Hand | Grade 2 | Nylon | Aisi 1008-1010 | Nylon Insert | 5 | €10.18 |
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MIDWEST ACORN NUT MPB3253 Hex Locknut, 1/4 In - 20 Thread Size, Nylon Insert, 7/16 In Hex Wd., Std Hex, Gr. 2, Steel
€9.40 /pack



