The Bolt,square Neck, cataloged under National Stock Number 5306-01-038-5261, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Frink America Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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 | 5306-01-038-5261 |
| Primary Part Number | 1001020 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Frink America Inc |
| Status | ACTIVE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Fastener Length | 2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN |
| Thread Class | 2A2A |
| Surface Treatment | OXIDE OVERALL |
| Material | STEEL OVERALL |
| Head Height | 0.316 INCHES NOMINAL0.316 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.625 INCHES0.625 INCHES IN |
| Material Document and Classification | SAE GRADE 5 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Thread Quantity Per Inch | 1111 |
| Head Diameter | 1.307 INCHES NOMINAL1.307 INCHES NOMINAL IN |
| Head Style | BUTTONBUTTON |
| Neck Width | 0.632 INCHES NOMINAL0.632 INCHES NOMINAL IN |
| Thread Length | 1.500 INCHES NOMINAL1.500 INCHES NOMINAL IN |
| Neck Length | 0.312 INCHES NOMINAL0.312 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1001020 PRIMARY | Frink America Inc (USA) |
NSN 5306-01-038-5261 is a Bolt,square Neck, manufactured by Frink America Inc, classified under FSC 5306 (No Item Name Available). Status: active.
NSN 5306-01-038-5261 has 1 cross-referenced part number: 1001020 (Frink America Inc).
There are 2 known substitutes for 5306-01-038-5261: 5999-01-212-2868, 4730-01-340-8693. Verify interchangeability with system specifications before substitution.
Key specifications for 1001020: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Fastener Length: 2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN; Thread Class: 2A2A; Surface Treatment: OXIDE OVERALL. 16 total characteristics are documented in the Federal Logistics Information System.