The Screw,tapping, cataloged under National Stock Number 5305-01-321-6684, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Meritor Industrial Products, Llc. Government technical data includes 10 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-321-6684 |
| Primary Part Number | S-254 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Meritor Industrial Products, Llc |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.312 INCHES IN |
| Nonmachine Thread Style | THRU SLOT (TYPE D) |
| Width Between Flats | 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Extended Washer Diameter | 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Head Height | 0.307 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Extended Washer Thickness | 0.037 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5305-01-321-6684 is a Screw,tapping, manufactured by Meritor Industrial Products, Llc, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-321-6684 has 3 cross-referenced part numbers: 9417406 (General Motors Corp), S-254 (Meritor Heavy Vehicle Systems, Llc), S-254 (Meritor Industrial Products, Llc).
There are 4 known substitutes for 5305-01-321-6684: 5935-00-033-5655, 5940-00-459-8464, 5360-00-630-4687 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for S-254: Nonmachine Nominal Thread Diameter: 0.312 INCHES IN; Nonmachine Thread Style: THRU SLOT (TYPE D); Width Between Flats: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN; Head Style: HEXAGON EXTENDED WASHER. 10 total characteristics are documented in the Federal Logistics Information System.