The Screw,close Tolerance, cataloged under National Stock Number 5305-01-526-4643, 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 20 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-526-4643 |
| Primary Part Number | 3M1169C7-18A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Point Diameter | 0.694 INCHES NOMINAL IN |
| Fastener Length | 1.804 INCHES MINIMUM AND 1.834 INCHES MAXIMUM IN |
| Thread Length | 0.689 INCHES MINIMUM AND 0.699 INCHES MAXIMUM IN |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.437 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Grip Length | 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN |
| Grip Diameter | 0.436 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | TORX |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.874 INCHES MINIMUM AND 0.888 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 | Y |
| Part Number | Manufacturer |
|---|---|
| TX1026C7-18A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| TX1026C7-18A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| GS1006C7-18A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| TX1026C7-18A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1026C7-18A | Hi-Shear Corporation (USA) |
| TX1026C7-18A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| 3M1169C7-18A PRIMARY | The Boeing Company Div Defense (USA) |
| TX1026C7-18A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TX1026C7-18A | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| TX1026C7-18A | 5/9 Secondary reference Sps Technologies Inc |
| TX1026C7-18A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-526-4643 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-526-4643 has 9 manufacturer part numbers on file: TX1026C7-18A (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), TX1026C7-18A (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), GS1006C7-18A (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), TX1026C7-18A (Sps Technologies, Llc Dba PB Fasteners), TX1026C7-18A (Hi-Shear Corporation) and 4 more.
Key specifications for 3M1169C7-18A: Point Diameter: 0.694 INCHES NOMINAL IN; Fastener Length: 1.804 INCHES MINIMUM AND 1.834 INCHES MAXIMUM IN; Thread Length: 0.689 INCHES MINIMUM AND 0.699 INCHES MAXIMUM IN; Criticality Code Justification: AGAV. 20 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.