The Screw,close Tolerance, cataloged under National Stock Number 5305-01-204-4201, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 15 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-204-4201 |
| Primary Part Number | 3M926-5L19 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 1.704 INCHES MINIMUM AND 1.734 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-83488,TYPE 2,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.506 INCHES MINIMUM AND 0.556 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM IN |
| Grip Diameter | 0.3110 INCHES MINIMUM AND 0.3120 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 | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.429 INCHES MINIMUM AND 0.477 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 |
|---|---|
| HT4068-5-19A | Howmet Global Fastening Systems Inc (USA) |
| HT4068-5-19A | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4068-5-19A | Hi-Shear Corporation (USA) |
| 11883-5L19 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M926-5L19 PRIMARY | The Boeing Company Div Defense (USA) |
| WC4068-5-19 | West Coast Aerospace, Inc. (USA) |
| HT4068-5-19A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HT4068-5-19A PRIMARY | Huck International, Inc (USA) |
| 3M926-5L19 | Heartland Precision Fasteners Inc (USA) |
| HT4068-5-19A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M926-5L19 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M926-5L19 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M926-5L19 | Houston Precision Fasteners I Lp (USA) |
| HT4068-5-19A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4068-5-19A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| HT4068-5-19A | 5/9 Secondary reference U.S. Government activity |
| HT4068-5-19A | 5/9 Secondary reference U.S. Government activity |
| HT4068-5-19A | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-204-4201 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-204-4201 has 15 manufacturer part numbers on file: HT4068-5-19A (Howmet Global Fastening Systems Inc), HT4068-5-19A (Sps Technologies Ltd, Tj Brooks Division), HT4068-5-19A (Hi-Shear Corporation), 11883-5L19 (Reid Products Inc. Dba Reid Products Inc), 3M926-5L19 (The Boeing Company Div Defense) and 10 more.
Key specifications for 3M926-5L19: Fastener Length: 1.704 INCHES MINIMUM AND 1.734 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-83488,TYPE 2,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.506 INCHES MINIMUM AND 0.556 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.312 INCHES IN. 16 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.