The Screw,close Tolerance, cataloged under National Stock Number 5305-01-129-9060, 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 20 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-129-9060 |
| Primary Part Number | ST3M652C7-13A |
| 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 |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.130 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| Fastener Length | 1.453 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Thread Length | 0.631 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN |
| Grip Diameter | 0.4365 INCHES MINIMUM AND 0.4370 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 | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.881 INCHES MINIMUM AND 0.888 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 |
|---|---|
| ST3M652C7-13A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M652C7-13A PRIMARY | Hi-Shear Corporation (USA) |
| ST3M652C7-13A PRIMARY | Huck International, Inc (USA) |
| ST3M652C7-13A | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M652C7-13A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M652C7-13A PRIMARY | West Coast Aerospace, Inc. (USA) |
| ST3M652C7-13A PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| ST3M652C7-13A | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4020-7-13A | 5/9 Secondary reference Huck International, Inc |
| HT4020-7-13A | 5/9 Secondary reference Hi-Shear Corporation |
| HT4020-7-13A | 5/9 Secondary reference U.S. Government activity |
| 10115221 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| HT4020-7-13A | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| HT4020-7-13A | 5/9 Secondary reference U.S. Government activity |
| HT4020-7-13A | 5/9 Secondary reference U.S. Government activity |
| ST3M652C7-13A | 3/2 Design control — primary reference U.S. Government activity |
| NC4020-7-13A | 5/9 Secondary reference Kirchhan Industries |
NSN 5305-01-129-9060 is a Screw,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-129-9060 has 7 manufacturer part numbers on file: ST3M652C7-13A (Howmet Global Fastening Systems Inc), ST3M652C7-13A (Hi-Shear Corporation), ST3M652C7-13A (Huck International, Inc), ST3M652C7-13A (Sps Technologies Ltd, Tj Brooks Division), ST3M652C7-13A (Fastener Innovation Technology, Inc. Dba F I T) and 2 more.
Key specifications for ST3M652C7-13A: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.130 INCHES MINIMUM AND 0.133 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.