The Screw,close Tolerance, cataloged under National Stock Number 5305-01-101-3324, 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 17 specifications, cited from the U.S. Government catalog. The record lists 17 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-101-3324 |
| Primary Part Number | 3M926-4L3 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 0.642 INCHES MINIMUM AND 0.672 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 | 0.178 INCHES MINIMUM AND 0.198 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 |
|---|---|
| 11883-4-3/11883-4L3 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4068-4-3A | Howmet Global Fastening Systems Inc (USA) |
| 3M926-4L3 | Houston Precision Fasteners I Lp (USA) |
| HT4068-4-3A | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 3M926-4L3 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4068-4-3A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HT4068-4-3A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4068-4-3A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 11883-4L3 | Reid Products Inc. Dba Reid Products Inc (USA) |
| WC4068-4-3 | West Coast Aerospace, Inc. (USA) |
| 3M926-4L3 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| HT4068-4-3A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M926-4L3 PRIMARY | The Boeing Company Div Defense (USA) |
| 3M926-4L3 | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| HT4068-4-3A | Huck International, Inc (USA) |
| HT4068-4-3A | Hi-Shear Corporation (USA) |
| 3M926-4L3 | Heartland Precision Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4068-4-3 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-3A | 5/2 Secondary reference U.S. Government activity |
| HT4068-4-3 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HT4068-4-3 | 5/9 Secondary reference U.S. Government activity |
| HT4068-4-3 | 5/9 Secondary reference Hi-Shear Corporation |
| HT4068-4-3 | 5/9 Secondary reference U.S. Government activity |
| 3M926-4-3 | 5/9 Secondary reference The Boeing Company Div Defense |
| HT4068-4-3A | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HT4068-4-3A | 5/9 Secondary reference Fastener Innovation Technology, Inc. Dba F I T |
NSN 5305-01-101-3324 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-101-3324 has 17 manufacturer part numbers on file: 11883-4-3/11883-4L3 (Reid Products Inc. Dba Reid Products Inc), HT4068-4-3A (Howmet Global Fastening Systems Inc), 3M926-4L3 (Houston Precision Fasteners I Lp), HT4068-4-3A (Sps Technologies Ltd, Tj Brooks Division), 3M926-4L3 (Fastener Innovation Technology, Inc. Dba F I T) and 12 more.
Key specifications for 3M926-4L3: Fastener Length: 0.642 INCHES MINIMUM AND 0.672 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.