The Screw,assembled Washer, cataloged under National Stock Number 5305-00-019-1678, is classified within Federal Supply Class 5305 (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 21 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 | 5305-00-019-1678 |
| Primary Part Number | 191678 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Thread Quantity Per Inch | 24 |
| Internal Drive Style | SLOT |
| Head Height | 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN |
| Thread Series Designator | UNF |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM PRIMARY WASHER |
| Width Between Flats | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Primary Washer Material Thickness | 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Primary Washer Outside Diameter | 0.567 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN |
| Washer Quantity | 1 |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM BEARING SURFACE OF HEAD |
| Fastener Length | 0.844 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| Head Style | HEXAGON |
| Material | STEEL COMP 1020 OR STEEL COMP 1050 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 Style | FLAT EXTERNAL TEETH |
| Thread Length | 0.761 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5305-00-019-1678 is a Screw,assembled Washer, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-019-1678 has 3 cross-referenced part numbers: 191678 (General Motors Llc Dba General Motors Llc), 191678 (General Motors Corp), 191678 (Army Weapons Command Attn Amswe-Ree-S).
There is 1 known substitute for 5305-00-019-1678: 5930-00-828-3990. Verify interchangeability with system specifications before substitution.
Key specifications for 191678: Thread Quantity Per Inch: 24; Internal Drive Style: SLOT; Head Height: 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN; Thread Series Designator: UNF. 22 total characteristics are documented in the Federal Logistics Information System.