The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-377-6548, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 21 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 | 5305-01-377-6548 |
| Primary Part Number | 676-0839-001 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Width Across Flats | 0.140 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN |
| Head Height | 0.2165 INCHES NOMINAL IN |
| Fastener Length | 6.2095 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 TY 1, TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.942 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5673 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.162 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 5.2675 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | DOUBLE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.1257 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 4.2275 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 631 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.265 INCHES NOMINAL 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 |
|---|---|
| 676-0839-001 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
NSN 5305-01-377-6548 is a Screw,externally Relieved Body, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-377-6548 has 1 manufacturer part number on file: 676-0839-001 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 676-0839-001: Width Across Flats: 0.140 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN; Head Height: 0.2165 INCHES NOMINAL IN; Fastener Length: 6.2095 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 TY 1, TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 21 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.