The Bolt,square Neck, cataloged under National Stock Number 5306-00-216-1125, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Department of Defense Project Manager-Mobile Electric Power. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-216-1125 |
| Primary Part Number | 70-4577 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Department of Defense Project Manager-Mobile Electric Power |
| Status | ACTIVE |
| Head Style | BUTTON |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Material | COPPER ALLOY OVERALL |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Class | 2A A |
| Neck Length | 0.141 INCHES NOMINAL IN |
| Head Diameter | 0.578 INCHES NOMINAL IN |
| Head Height | 0.125 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Neck Width | 0.245 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Thread Length | 0.750 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Direction | RIGHT-HAND |
| Thread Quantity Per Inch | 20 |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5306-00-216-1125 is a Bolt,square Neck, manufactured by Department of Defense Project Manager-Mobile Electric Power, classified under FSC 5306 (No Item Name Available). Status: active.
NSN 5306-00-216-1125 has 3 cross-referenced part numbers: 70-4577 (Department of Defense Project Manager-Mobile Electric Power), 1-4-20X1 (Cortelco Canada Inc), 70-4577 (Afcon Products, Inc.).
There is 1 known substitute for 5306-00-216-1125: 5305-00-225-3843. Verify interchangeability with system specifications before substitution.
Key specifications for 70-4577: Head Style: BUTTON; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Material: COPPER ALLOY OVERALL; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 15 total characteristics are documented in the Federal Logistics Information System.