The Screw,close Tolerance, cataloged under National Stock Number 5305-01-293-9547, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 12 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-293-9547 |
| Primary Part Number | HT4025L3-38 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 2.766 INCHES MINIMUM AND 2.796 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.365 INCHES MINIMUM AND 2.385 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.376 INCHES MINIMUM AND 0.385 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 |
|---|---|
| HT4025L3-38 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M454-3L38 | Houston Precision Fasteners I Lp (USA) |
| ST3M454-3L38 | Howmet Global Fastening Systems Inc (USA) |
| ST3M454-3L38 | West Coast Aerospace, Inc. (USA) |
| HT4025L3-38 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M454-3L38 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M454-3L38 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M454-3L38 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| HT4025L3-38 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 11905-3L38 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M454-3L38 | Heartland Precision Fasteners Inc (USA) |
| HT4025L3-38 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M454-3L38 | 5/2 Secondary reference U.S. Government activity |
| ST3M454-3L38 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4025L3-38 | 3/9 Design control — primary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| HT4025L3-38 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-293-9547 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-293-9547 has 12 manufacturer part numbers on file: HT4025L3-38 (Hi-Shear Corporation), ST3M454-3L38 (Houston Precision Fasteners I Lp), ST3M454-3L38 (Howmet Global Fastening Systems Inc), ST3M454-3L38 (West Coast Aerospace, Inc.), HT4025L3-38 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 7 more.
Key specifications for HT4025L3-38: Fastener Length: 2.766 INCHES MINIMUM AND 2.796 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN; Material Document and Classification: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.