The Screw,machine, cataloged under National Stock Number 5305-00-006-8014, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bsi Standards Limited. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-006-8014 |
| Primary Part Number | A173-3E |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bsi Standards Limited |
| Status | ACTIVE |
| Fastener Length | 0.900 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS6300 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE |
| Thread Length | 0.499 INCHES MINIMUM AND 0.569 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 4037 OR STEEL COMP 8630 |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNF |
| Head Diameter | 0.452 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5305-00-006-8014 is a Screw,machine, manufactured by Bsi Standards Limited, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-006-8014 has 2 manufacturer part numbers on file: A173-3E (Bsi Standards Limited), A173-3E (Ufc Aerospace Europe Limited).
Key specifications for A173-3E: Fastener Length: 0.900 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS6300 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE; Thread Length: 0.499 INCHES MINIMUM AND 0.569 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES 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.