The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-381-0666, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Information and Electronic Systems Integration Inc.. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-381-0666 |
| Primary Part Number | A320C032-101 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bae Systems Information and Electronic Systems Integration Inc. |
| Status | ACTIVE |
| Extended Washer Thickness | 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN |
| Head Height | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| Fastener Length | 1.500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.400 INCHES NOMINAL IN |
| Thread Length | 0.460 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5643 COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.198 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.427 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.925 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 630 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| A320C032-101 PRIMARY | Bae Systems Information and Electronic Systems Integration Inc. (USA) |
| Reference | Meaning |
|---|---|
| A320C032-101 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-381-0666 is a Screw,externally Relieved Body, manufactured by Bae Systems Information and Electronic Systems Integration Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-381-0666 has 1 manufacturer part number on file: A320C032-101 (Bae Systems Information and Electronic Systems Integration Inc.).
Key specifications for A320C032-101: Extended Washer Thickness: 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN; Head Height: 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN; Fastener Length: 1.500 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 20 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.