The Bolt,square Neck, cataloged under National Stock Number 5306-00-012-8321, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Motors Llc Dba General Motors Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-012-8321 |
| Primary Part Number | 128321 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | QQ-S-633,CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Class | 2A A |
| Thread Length | 0.625 INCHES MINIMUM IN |
| Neck Width | 0.185 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 24 |
| Head Diameter | 0.625 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Fastener Length | 0.875 INCHES NOMINAL IN |
| Head Height | 0.094 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Head Style | OVAL |
| Neck Length | 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| Successor | 5340-01-468-0724 (128321) |
| HAZMAT | No |
NSN 5306-00-012-8321 is a Bolt,square Neck, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 5306 (No Item Name Available). Status: active.
NSN 5306-00-012-8321 has 2 cross-referenced part numbers: 128321 (General Motors Corp), 128321 (General Motors Llc Dba General Motors Llc).
There are 2 known substitutes for 5306-00-012-8321: 5340-01-468-0724, 5935-00-234-2116. Verify interchangeability with system specifications before substitution.
Key specifications for 128321: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: QQ-S-633,CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Class: 2A A; Thread Length: 0.625 INCHES MINIMUM IN. 14 total characteristics are documented in the Federal Logistics Information System.