The Screw,close Tolerance, cataloged under National Stock Number 5305-01-103-3242, 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 17 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-103-3242 |
| Primary Part Number | 3M926-4L15 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 1.392 INCHES MINIMUM AND 1.422 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-83488 TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.928 INCHES MINIMUM AND 0.948 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 | 101.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 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 |
|---|---|
| 3M926-4L15 PRIMARY | Hi-Shear Corporation (USA) |
| 3M926-4L15 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 3M926-4L15 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 3M926-4L15 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M926-4L15 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M926-4L15 PRIMARY | Huck International, Inc (USA) |
| 3M926-4L15 PRIMARY | West Coast Aerospace, Inc. (USA) |
| 3M926-4L15 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4068-4-15A | Howmet Global Fastening Systems Inc (USA) |
| 11883-4-15/11883-4L15 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 3M926-4L15 | 3/2 Design control — primary reference U.S. Government activity |
| WC4068-4-15 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| 3M926-4-15 | 5/9 Secondary reference The Boeing Company Div Defense |
| HT4068-4-15 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HT4068-4-15 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-15 | 5/9 Secondary reference Hi-Shear Corporation |
| HT4068-4-15 | 5/9 Secondary reference Huck International, Inc |
| HT4068-4-15 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-15 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-15A | 5/9 Secondary reference Hi-Shear Corporation |
| 3M926-4L15 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5305-01-103-3242 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-103-3242 has 10 manufacturer part numbers on file: 3M926-4L15 (Hi-Shear Corporation), 3M926-4L15 (Howmet Global Fastening Systems Inc), 3M926-4L15 (Sps Technologies Ltd, Tj Brooks Division), 3M926-4L15 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 3M926-4L15 (Fastener Innovation Technology, Inc. Dba F I T) and 5 more.
Key specifications for 3M926-4L15: Fastener Length: 1.392 INCHES MINIMUM AND 1.422 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-83488 TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN; Material Document and Classification: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 17 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.