The Setscrew, cataloged under National Stock Number 5305-01-341-8530, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. Government technical data includes 22 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-341-8530 |
| Primary Part Number | 955109-1 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Point Diameter | 0.320 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Head Height | 0.100 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Point Length | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Fastener Length | 0.395 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM FASTENER |
| Point Chamfer Angle | 40.0 DEGREES MINIMUM AND 50.0 DEGREES MAXIMUM |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Point Style | CHAMFER DOG |
| Locking Feature | STRIP THREADS |
| Surface Treatment | CADMIUM AND CHROMATE FASTENER |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Material | STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 8630 OR STEEL COMP 8740 FASTENER |
| Thread Series Designator | UNF |
| Head Diameter | 0.320 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 955109-1 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
NSN 5305-01-341-8530 is a Setscrew, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-341-8530 has 1 manufacturer part number on file: 955109-1 (Honeywell International Inc. Div Aerospace - Torrance).
1 possible match (shared part number, not a government interchangeability claim): 5895-01-573-8477. Verify interchangeability with system specifications before substitution.
Key specifications for 955109-1: Point Diameter: 0.320 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN; Width Across Flats: 0.250 INCHES NOMINAL IN; Head Height: 0.100 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Point Length: 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN. 22 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.