# Carriage Bolt, Inch, Neck Type Square, Basic Material Steel, Material Grade Grade A, Fastener Finish Plain, Dia./Thread Size 5/16 In.-18, Fastener Length 1 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), ASME B18.5, SAE J429, Drill Size 21/64 in, Head Dia. 0.719 in, Head Height 11/64 in, Head Type Round, Square Height 0.187 in, Square Width 0.324 in, Tensile Strength 74,000 psi, For Use With Grade 2 Hex Nuts, Package Quantity 100

**Manufacturer:** Zoro Select  
**MPN:** `U08300.031.0100`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Zoro Select |
| Manufacturer name | Zoro Select |
| Manufacturer | Zoro Select |
| CategoryId | 4924 |
| CategoryIdL1 | 9 |
| CategoryIdL2 | 4395 |
| CategoryIdL3 | 4924 |
| CategoryL1 | Fasteners |
| CategoryL2 | Screws & Bolts |
| CategoryL3 | Carriage Bolts |
| DimensionUnit | inch |
| GTIN | None |
| GraingerSku | 21A887 |
| UPC | None |
| UnitOfMeasure | PK |
| Weight | 3.13 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | ZZ |
| height | 1.4 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 6.6 |
| moq | 1 |
| MPN | U08300.031.0100 |
| multiple | 1 |
| qtyInStock | 18 |
| qtyInStockOverride | -2 |
| SKU | G4457643 |
| tierMinQty1 | 1 |
| tierPrice1 | 9.39 |
| url | https://www.zoro.com/zoro-select-carriage-bolt-516-18x1l-pk100-u083000310100/i/G4457643/ |
| width | 5.5 |
| Thread Size | 5/16"-18 |
| Fastener Length | 1 in |
| Neck Height | 11/64 in |
| Head Dia | 0.719 in |
| Dia /Thread Size | 5/16"-18 |
| Square Width | 0.324 in |
| Head Height | 11/64 in |
| Square Height | 0.187 in |
| Drill Size | 21/64 in |
| Length | 1" |
| Neck Width | 5/16 in |
| Head Width | 45/64 in |
| Maximum Neck Height | 3/16 in |
| Minimum Neck Width | 5/16 in |
| Maximum Neck Width | 21/64 in |
| Minimum Neck Height | 5/32 in |
| Minimum Head Diameter | 11/16 in |
| Dimensional Standards | ASME B18.5 |
| Screw Size | 5/16"-18 |
| Minimum Thread Length | 7/8 in |
| Maximum Head Diameter | 23/32 in |
| Maximum Head Height | 11/64 in |
| Minimum Head Height | 5/32 in |
| Overall Length | 1 in |
| Item | Carriage Bolt |
| Material | Steel |
| Material Grade/Class | Grade 2 |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G4457643 | 9.39 | 1 | 18 | 1 |
| grainger.ca | EBP21A887 | 12.33144394 | 1 | None | 1 |
| Grainger | 21A887 | 14.36 | 1 | 28 | 1 |

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Structured data: `/python/html6/product/500/218000000/218472000/part_--U083000310100---ZoroSelect--50cb852b47.json`  
Search API: https://www.dataalchemy.com/api/  
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