The Screw,close Tolerance, cataloged under National Stock Number 5305-01-101-3329, 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 17 specifications, cited from the U.S. Government catalog. The record lists 13 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-101-3329 |
| Primary Part Number | HT4072-3-2-5 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-83488 TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.287 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM AND CHROMATE OVERALL |
| 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 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.2966 INCHES MINIMUM AND 0.3016 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 |
|---|---|
| HT4072-3-2-5 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M938-3-2-5 | J and H Investments Co Inc (USA) |
| 3M938-3-2-5 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| WC4072-3-2-5 | West Coast Aerospace, Inc. (USA) |
| HT4072-3-2-5 | Howmet Global Fastening Systems Inc (USA) |
| 11889-3-2-5 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4072-3-2-5 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4072-3-2-5 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| HT4072-3-2-5 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M938-3-2-5 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4072-3-2-5 PRIMARY | Hi-Shear Corporation (USA) |
| HT4072-3-2-5 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4072-3-2-5 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4072-3-2-5 | 5/9 Secondary reference U.S. Government activity |
| HT4072-3-2-5 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| HT4072-3-2-5 | 5/2 Secondary reference U.S. Government activity |
| 3M938-3-2-5 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4072-3-2-5 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-101-3329 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-101-3329 has 13 manufacturer part numbers on file: HT4072-3-2-5 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 3M938-3-2-5 (J and H Investments Co Inc), 3M938-3-2-5 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), WC4072-3-2-5 (West Coast Aerospace, Inc.), HT4072-3-2-5 (Howmet Global Fastening Systems Inc) and 8 more.
Key specifications for HT4072-3-2-5: Fastener Length: 0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-83488 TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.287 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN; Material Document and Classification: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 17 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.