The Screw,close Tolerance, cataloged under National Stock Number 5305-01-133-9442, 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 22 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through both NSN and commercial part number lookups. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-133-9442 |
| Primary Part Number | ST3M730-4DL13 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Fastener Length | 1.222 INCHES MINIMUM AND 1.252 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-83488,TY 2,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.400 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 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 | 28 |
| Material | STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.096 INCHES MINIMUM AND 1.146 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.464 INCHES MINIMUM AND 0.506 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 |
|---|---|
| ST3M730-4DL13 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M730-4DL13 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M730-4DL13 PRIMARY | Huck International, Inc (USA) |
| ST3M730-4DL13 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M730-4DL13 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M730-4DL13 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M730-4DL13 PRIMARY | Space Instruments Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4054-4D131 | 5/9 Secondary reference U.S. Government activity |
| HT4054-4D13 | 5/9 Secondary reference Hi-Shear Corporation |
| HT4054-4D13A | 5/9 Secondary reference U.S. Government activity |
| HT4054-4D13A | 5/9 Secondary reference Hi-Shear Corporation |
| HT4054-4D13A | 5/9 Secondary reference U.S. Government activity |
| ST3M730-4D13 | 5/9 Secondary reference The Boeing Company Div Defense |
| ST3M730-4DL13 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4054-4D13 | 5/9 Secondary reference U.S. Government activity |
| HT4054-4D13A | 5/9 Secondary reference U.S. Government activity |
| ST3M730-4DL13 | 5/9 Secondary reference Sps Technologies Inc |
| HT4054-4D13 | 5/9 Secondary reference U.S. Government activity |
| HT4054-4D13A | 5/9 Secondary reference U.S. Government activity |
| ST3M730-4DL13 | 3/2 Design control — primary reference U.S. Government activity |
| 10115357 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5305-01-133-9442 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-133-9442 has 7 manufacturer part numbers on file: ST3M730-4DL13 (Hi-Shear Corporation), ST3M730-4DL13 (Howmet Global Fastening Systems Inc), ST3M730-4DL13 (Huck International, Inc), ST3M730-4DL13 (Sps Technologies Ltd, Tj Brooks Division), ST3M730-4DL13 (Fastener Innovation Technology, Inc. Dba F I T) and 2 more.
Key specifications for ST3M730-4DL13: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Fastener Length: 1.222 INCHES MINIMUM AND 1.252 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-83488,TY 2,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 22 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.