The Screw,close Tolerance, cataloged under National Stock Number 5305-01-132-1065, 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 18 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-132-1065 |
| Primary Part Number | HT8137-4-14AS |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Head Height | 0.071 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Fastener Length | 1.328 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN |
| Thread Length | 0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Material Document and Classification | NAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.502 INCHES MINIMUM AND 0.507 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 |
|---|---|
| HT8137-4-14AS PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 110179-4-14AS | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| BM33024V4-14U PRIMARY | Huck International, Inc (USA) |
| HT271A4-14 PRIMARY | Hi-Shear Corporation (USA) |
| HT271A4-14 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| 110179-4-14AS | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies, Llc Dba PB Fasteners |
| BM33024V4-14U | 5/9 Secondary reference U.S. Government activity |
| ST3M430V4-14AS | 5/2 Secondary reference U.S. Government activity |
| 110179-4-14AS | 3/2 Design control — primary reference U.S. Government activity |
| ST3M430V4-14AS | C/1 Advisory reference — outside the item-of-supply concept Fastener Innovation Technology, Inc. Dba F I T |
| HT8137-4-14AS | 5/9 Secondary reference U.S. Government activity |
| 10115316 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| WC8137-4-14A | C/1 Advisory reference — outside the item-of-supply concept West Coast Aerospace, Inc. |
| ST3M430V4-14AS | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5305-01-132-1065 is a Screw,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-132-1065 has 5 manufacturer part numbers on file: HT8137-4-14AS (Howmet Global Fastening Systems Inc), 110179-4-14AS (Sps Technologies Ltd, Tj Brooks Division), BM33024V4-14U (Huck International, Inc), HT271A4-14 (Hi-Shear Corporation), HT271A4-14 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for HT8137-4-14AS: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Head Height: 0.071 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Fastener Length: 1.328 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN. 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.