The Screw,close Tolerance, cataloged under National Stock Number 5305-01-103-1766, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-103-1766 |
| Primary Part Number | HT4072-4-6-7 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.015 INCHES MAXIMUM IN |
| Fastener Length | 0.788 INCHES MINIMUM AND 0.808 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-83488 TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.418 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN |
| Material Document and Classification | 23112,TY D,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FILLISTER COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM AND CHROMATE 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 | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.3898 INCHES MINIMUM AND 0.3948 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 |
|---|---|
| HT4072-4-6-7 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 3M938-4-6-7 PRIMARY | West Coast Aerospace, Inc. (USA) |
| 3M938-4-6-7 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4072-4-6-7 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4072-4-6-7 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4072-4-6-7 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4072-4-6-7 PRIMARY | Huck International, Inc (USA) |
| HT4072-4-6-7 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HT4072-4-6-7 | 5/9 Secondary reference Sps Technologies Inc |
| HT4072-4-6-7 | 3/2 Design control — primary reference U.S. Government activity |
| HT4072-4-6-7 | 5/9 Secondary reference U.S. Government activity |
| 3M938-4-6-7 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4072-4-6-7 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-103-1766 is a Screw,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-103-1766 has 8 manufacturer part numbers on file: HT4072-4-6-7 (Howmet Global Fastening Systems Inc), 3M938-4-6-7 (West Coast Aerospace, Inc.), 3M938-4-6-7 (Fastener Innovation Technology, Inc. Dba F I T), HT4072-4-6-7 (Sps Technologies Ltd, Tj Brooks Division), HT4072-4-6-7 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 3 more.
Key specifications for HT4072-4-6-7: Head Height: 0.015 INCHES MAXIMUM IN; Fastener Length: 0.788 INCHES MINIMUM AND 0.808 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-83488 TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.418 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN. 19 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.