The Setscrew, cataloged under National Stock Number 5305-01-398-4039, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-398-4039 |
| Primary Part Number | 377-SS-20 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc |
| Status | ACTIVE |
| Point Diameter | 0.068 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN |
| Head Height | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Point Length | 0.063 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN |
| Fastener Length | 0.985 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A581 ASSN STD ALL MATERIAL RESPONSES OR ASTM A582 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Point Chamfer Angle | 90.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | KNURLED NO. 5 |
| Thread Direction | RIGHT-HAND |
| Point Style | CONE |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.250 INCHES MINIMUM AND 0.265 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 |
|---|---|
| 377-SS-20 PRIMARY | Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc (USA) |
NSN 5305-01-398-4039 is a Setscrew, manufactured by Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-398-4039 has 1 manufacturer part number on file: 377-SS-20 (Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc).
Key specifications for 377-SS-20: Point Diameter: 0.068 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN; Head Height: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Point Length: 0.063 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN; Fastener Length: 0.985 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN. 19 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.