The Screw,machine, cataloged under National Stock Number 5305-00-437-4252, 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 16 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 | 5305-00-437-4252 |
| Primary Part Number | A173-14D |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bsi Standards Limited |
| Status | ACTIVE |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 1.900 INCHES MINIMUM AND 1.940 INCHES MAXIMUM IN |
| Screw Material Document and Classification | A 173,FSCM K0195 MFR REF SINGLE MATERIAL RESPONSE |
| Thread Length | 0.437 INCHES MINIMUM AND 0.499 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Minimum Tensile Strength | 110000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| Head Diameter | 0.337 INCHES MINIMUM AND 0.387 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | D.T.D. 904,FSCM 05901 MFR REF 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 |
| Part Number | Manufacturer |
|---|---|
| A173-14D PRIMARY | Bsi Standards Limited (GBR) |
NSN 5305-00-437-4252 is a Screw,machine, manufactured by Bsi Standards Limited, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-437-4252 has 1 manufacturer part number on file: A173-14D (Bsi Standards Limited).
Key specifications for A173-14D: Screw Surface Treatment: CADMIUM; Fastener Length: 1.900 INCHES MINIMUM AND 1.940 INCHES MAXIMUM IN; Screw Material Document and Classification: A 173,FSCM K0195 MFR REF SINGLE MATERIAL RESPONSE; Thread Length: 0.437 INCHES MINIMUM AND 0.499 INCHES MAXIMUM IN. 16 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.