The Screw,close Tolerance, cataloged under National Stock Number 5305-01-129-9058, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 22 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-129-9058 |
| Primary Part Number | HT4020-5-14A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.088 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Fastener Length | 1.390 INCHES MINIMUM AND 1.437 INCHES MAXIMUM IN |
| Thread Length | 0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 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 | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE 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 | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.629 INCHES MINIMUM AND 0.634 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 |
|---|---|
| HT4020-5-14A PRIMARY | Huck International, Inc (USA) |
| ST3M652C5-14A | Hi-Shear Corporation (USA) |
| HT4020-5-14A PRIMARY | Hi-Shear Corporation (USA) |
| ST3M652C5-14A | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M652C5-14A | Huck International, Inc (USA) |
| ST3M652C5-14A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M652C5-14A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4020-5-14A PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4020-5-14A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4020-5-14A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M652C5-14A | Howmet Global Fastening Systems Inc (USA) |
| HT4020-5-14A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4020-5-14A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M652C5-14A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M652C5-14A | Houston Precision Fasteners I Lp (USA) |
| ST3M652C5-14A | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M652C5-14A PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M652C5-14A | West Coast Aerospace, Inc. (USA) |
| ST3M652C5-14A | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M652C5-14A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| ST3M652C5-14A | 5/2 Secondary reference U.S. Government activity |
| HT4020-5-14A | 5/9 Secondary reference U.S. Government activity |
| HT4020-5-14A | 5/2 Secondary reference U.S. Government activity |
| ST3M652C5-14A | 5/2 Secondary reference U.S. Government activity |
| HT4020-5-14A | 3/2 Design control — primary reference U.S. Government activity |
| 10130704 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5305-01-129-9058 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-129-9058 has 22 manufacturer part numbers on file: HT4020-5-14A (Huck International, Inc), ST3M652C5-14A (Hi-Shear Corporation), HT4020-5-14A (Hi-Shear Corporation), ST3M652C5-14A (Sps Technologies Ltd, Tj Brooks Division), ST3M652C5-14A (Huck International, Inc) and 17 more.
Key specifications for HT4020-5-14A: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.088 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN. 20 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.