The Setscrew, cataloged under National Stock Number 5305-01-342-8549, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Imi Systems Ltd. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-342-8549 |
| Primary Part Number | 402512437 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Imi Systems Ltd |
| Status | ACTIVE |
| Width Across Flats | 0.125 INCHES NOMINAL IN |
| Fastener Length | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM FASTENER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | CONE |
| Locking Feature | PATCH OR PELLET OR STRIP THREADS |
| Surface Treatment | CADMIUM AND CHROMATE FASTENER |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Material | STEEL COMP 4032 OR STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 FASTENER |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 402512437 | Imi Systems Ltd (ISR) |
| Reference | Meaning |
|---|---|
| MS51974-114 | 5/9 Secondary reference U.S. Government activity |
| MS51974-114 | 3/2 Design control — primary reference U.S. Government activity |
| FF-S-200 | 4/1 Identification reference U.S. Government activity |
| 402512437 | 5/9 Secondary reference Israel Military Industries Ltd Dba Taas - Israel Industries Ltd - Formerly |
NSN 5305-01-342-8549 is a Setscrew, manufactured by Imi Systems Ltd, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-342-8549 has 1 manufacturer part number on file: 402512437 (Imi Systems Ltd).
Key specifications for 402512437: Width Across Flats: 0.125 INCHES NOMINAL IN; Fastener Length: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM FASTENER. 16 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.