The Screw,assembled Washer, cataloged under National Stock Number 5305-00-177-5312, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Army Weapons Command Attn Amswe-Ree-S. Government technical data includes 20 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-177-5312 |
| Primary Part Number | 420982 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Army Weapons Command Attn Amswe-Ree-S |
| Status | ACTIVE |
| Primary Washer Style | FLAT EXTERNAL TEETH |
| Head Style | ROUND |
| Head Diameter | 0.382 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Primary Washer Outside Diameter | 0.395 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN |
| Hardness Rating | 40.0 ROCKWELL C NOMINAL PRIMARY WASHER |
| Internal Drive Style | SLOT |
| Thread Quantity Per Inch | 24 |
| Primary Washer Material Thickness | 0.022 INCHES NOMINAL IN |
| Washer Quantity | 1 |
| Nominal Thread Diameter | 0.216 INCHES IN |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES PRIMARY WASHER |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES FASTENER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Thread Length | 0.644 INCHES MINIMUM AND 0.706 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Fastener Length | 0.688 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Head Height | 0.139 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN |
| Material | STEEL COMP 1070 OR STEEL COMP 1566 PRIMARY WASHER |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 420982 | Army Weapons Command Attn Amswe-Ree-S (USA) |
NSN 5305-00-177-5312 is a Screw,assembled Washer, manufactured by Army Weapons Command Attn Amswe-Ree-S, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-177-5312 has 1 cross-referenced part number: 420982 (Army Weapons Command Attn Amswe-Ree-S).
There is 1 known substitute for 5305-00-177-5312: 5940-00-437-6156. Verify interchangeability with system specifications before substitution.
Key specifications for 420982: Primary Washer Style: FLAT EXTERNAL TEETH; Head Style: ROUND; Head Diameter: 0.382 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN; Surface Treatment: CADMIUM OR ZINC OVERALL. 20 total characteristics are documented in the Federal Logistics Information System.