The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-185-6991, 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 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-185-6991 |
| Primary Part Number | 107-SS |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc |
| Status | ACTIVE |
| Head Height | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Fastener Length | 0.766 INCHES MINIMUM AND 0.796 INCHES MAXIMUM IN |
| Thread Length | 0.266 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN |
| First Diameter From Head | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OR STEEL COMP 303 PLUS X OR STEEL COMP 303MA OR STEEL COMP 303SE OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.312 INCHES MINIMUM AND 0.328 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 |
|---|---|
| 107-SS | Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc (USA) |
| Reference | Meaning |
|---|---|
| 600683-001 | 3/2 Design control — primary reference U.S. Government activity |
| 600683-1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5305-01-185-6991 is a Screw,externally Relieved Body, manufactured by Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-185-6991 has 1 manufacturer part number on file: 107-SS (Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 3110-01-422-9497, 2040-01-448-2909. Verify interchangeability with system specifications before substitution.
Key specifications for 107-SS: Head Height: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN; Fastener Length: 0.766 INCHES MINIMUM AND 0.796 INCHES MAXIMUM IN; Thread Length: 0.266 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN; First Diameter From Head: 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN. 15 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.