The Screw,close Tolerance, cataloged under National Stock Number 5305-01-452-2729, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is West Coast Aerospace, Inc.. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-452-2729 |
| Primary Part Number | 3M926-5L17 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | West Coast Aerospace, Inc. |
| Status | ACTIVE |
| Fastener Length | 1.506 INCHES MINIMUM AND 1.556 INCHES MAXIMUM IN |
| Thread Length | 0.531 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.050 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN |
| Grip Diameter | 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM 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 | 0.469 INCHES MINIMUM AND 0.474 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 |
|---|---|
| 3M926-5L17 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HT4068-5-17A | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 3M926-5L17 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M926-5L17 | Hi-Shear Corporation (USA) |
| HT4068-5-17A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4068-5-17A | Huck International, Inc (USA) |
| 3M926-5L17 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 11883-5L17 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 3M926-5L17 | 5/9 Secondary reference The Boeing Company Div Defense |
| HT4068-5-17A | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HT4068-5-17A | 5/9 Secondary reference Sps Technologies Inc |
| HT4068-5-17A | 5/9 Secondary reference U.S. Government activity |
| HT4068-5-17A | 5/9 Secondary reference U.S. Government activity |
| HT4068-5-17A | 5/9 Secondary reference Hi-Shear Corporation |
NSN 5305-01-452-2729 is a Screw,close Tolerance, manufactured by West Coast Aerospace, Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-452-2729 has 8 manufacturer part numbers on file: 3M926-5L17 (West Coast Aerospace, Inc.), HT4068-5-17A (Sps Technologies Ltd, Tj Brooks Division), 3M926-5L17 (Sps Technologies, Llc Dba PB Fasteners), 3M926-5L17 (Hi-Shear Corporation), HT4068-5-17A (Howmet Global Fastening Systems Inc) and 3 more.
Key specifications for 3M926-5L17: Fastener Length: 1.506 INCHES MINIMUM AND 1.556 INCHES MAXIMUM IN; Thread Length: 0.531 INCHES NOMINAL IN; Nominal Thread Diameter: 0.312 INCHES IN; Head Style: FLAT COUNTERSUNK. 15 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.