The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-080-0666, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems (operations) Limited. Government technical data includes 18 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 | 5305-01-080-0666 |
| Primary Part Number | 3150-2120-018 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bae Systems (operations) Limited |
| Status | ACTIVE |
| Head Height | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Fastener Length | 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OR DEF 130 FSCM K0656 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763 300 SERIES FED SPEC SINGLE MATERIAL RESPONSE OR 66 300 SERIES FED STD SINGLE MATERIAL RESPONSE OR COMP 16-18 OR 18-8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.205 INCHES MINIMUM AND 0.214 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 |
|---|---|
| 3150-2120-018 PRIMARY | Bae Systems (operations) Limited (GBR) |
NSN 5305-01-080-0666 is a Screw,externally Relieved Body, manufactured by Bae Systems (operations) Limited, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-080-0666 has 1 manufacturer part number on file: 3150-2120-018 (Bae Systems (operations) Limited).
Key specifications for 3150-2120-018: Head Height: 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN; Fastener Length: 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OR DEF 130 FSCM K0656 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.250 INCHES NOMINAL IN. 18 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.