The Screw,close Tolerance, cataloged under National Stock Number 5305-01-172-2549, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-172-2549 |
| Primary Part Number | LD111-0044-0405 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Fastener Length | 0.694 INCHES MINIMUM AND 0.724 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.382 INCHES MINIMUM AND 0.412 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.312 INCHES NOMINAL IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE 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 XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.464 INCHES MINIMUM AND 0.507 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 |
|---|---|
| LD111-0044-0405 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| LD111-0044-0405 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| LD111-0044-0405 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| LD111-0044-0405 | Howmet Global Fastening Systems Inc (USA) |
| LD111-0044-0405 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| LD111-0044-0405 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| LD111-0044-0405 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| LD111-0029-0405 | 5/9 Secondary reference The Boeing Company Div Legacy Am&m |
NSN 5305-01-172-2549 is a Screw,close Tolerance, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-172-2549 has 7 manufacturer part numbers on file: LD111-0044-0405 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), LD111-0044-0405 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), LD111-0044-0405 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), LD111-0044-0405 (Howmet Global Fastening Systems Inc), LD111-0044-0405 (The Boeing Company Div Legacy Am&m) and 2 more.
Key specifications for LD111-0044-0405: Fastener Length: 0.694 INCHES MINIMUM AND 0.724 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.382 INCHES MINIMUM AND 0.412 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.