The Screw,close Tolerance, cataloged under National Stock Number 5305-01-129-5533, 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 19 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-129-5533 |
| Primary Part Number | ST3M454-3DL9 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 0.953 INCHES MINIMUM AND 0.983 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 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 | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.832 INCHES MINIMUM AND 0.872 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.376 INCHES MINIMUM AND 0.385 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 |
|---|---|
| WC4025L3D9 | West Coast Aerospace, Inc. (USA) |
| ST3M454-3DL9 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| HT4025L3D9 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4025L3D9 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M454-3DL9 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M454-3DL9 | Heartland Precision Fasteners Inc (USA) |
| ST3M454-3DL9 | Houston Precision Fasteners I Lp (USA) |
| 11905-3DL9 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4025L3D9 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4025L3D9 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HT4025L3D9 | Huck International, Inc (USA) |
| HT4025L3D9 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M454-3DL9 PRIMARY | The Boeing Company Div Defense (USA) |
| HT4025L3D9 | Howmet Global Fastening Systems Inc (USA) |
| HT4025L3D9 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 10115199 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST3M454-3DL9 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HT4025L3D9 | 5/2 Secondary reference U.S. Government activity |
| HT4025L3D9 | 5/9 Secondary reference U.S. Government activity |
| HT4025L3D9 | 5/9 Secondary reference U.S. Government activity |
| ST3M454-3DL9 | 5/9 Secondary reference Sps Technologies Ltd, Tj Brooks Division |
NSN 5305-01-129-5533 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-129-5533 has 15 manufacturer part numbers on file: WC4025L3D9 (West Coast Aerospace, Inc.), ST3M454-3DL9 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), HT4025L3D9 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4025L3D9 (Sps Technologies Ltd, Tj Brooks Division), ST3M454-3DL9 (Fastener Innovation Technology, Inc. Dba F I T) and 10 more.
Key specifications for ST3M454-3DL9: Fastener Length: 0.953 INCHES MINIMUM AND 0.983 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM FIRST HOLE IN. 19 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.