The Screw,close Tolerance, cataloged under National Stock Number 5305-01-446-8036, 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 18 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-446-8036 |
| Primary Part Number | 3M1170D3-9A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.046 INCHES NOMINAL IN |
| Fastener Length | 0.907 INCHES NOMINAL IN |
| Thread Length | 0.345 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.562 INCHES NOMINAL IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.293 INCHES MINIMUM AND 0.301 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 |
|---|---|
| 3M1170D3-9A | Hi-Shear Corporation (USA) |
| 3M1170D3-9A PRIMARY | The Boeing Company Div Defense (USA) |
| TX1027D3-9A PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1170D3-9A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M1170D3-9A | Heartland Precision Fasteners Inc (USA) |
| 3M1170D3-9A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1170D3-9A | West Coast Aerospace, Inc. (USA) |
| 3M1170D3-9A | Howmet Global Fastening Systems Inc (USA) |
| 3M1170D3-9A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 11825D3-9A | Reid Products Inc. Dba Reid Products Inc (USA) |
| TX1027D3-9A PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 11845D3-9A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1170D3-9A | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M1170D3-9A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| 3M1170D3-9A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M1170D3-9A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M1170D3-9A | Huck International, Inc (USA) |
| 3M1170D3-9A | Houston Precision Fasteners I Lp (USA) |
| Reference | Meaning |
|---|---|
| HP1170D3-9 | C/1 Advisory reference — outside the item-of-supply concept Heartland Precision Fasteners Inc |
| TX1027D3-9A | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Inc |
| TX1027D3-9A | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| TX1027D3-9A | C/1 Advisory reference — outside the item-of-supply concept Hi-Shear Corporation |
| TX1027D3-9A | C/1 Advisory reference — outside the item-of-supply concept Fairchild Fasteners Europe - Vsd Gmbh |
| TX1027D3-9A | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies, Llc Dba PB Fasteners |
| TX1027D3-9A | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 10113822 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| TX1027D3-9A | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| 3M1170D3-9A | 5/2 Secondary reference U.S. Government activity |
| 3M1170D3-9A | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-446-8036 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-446-8036 has 18 manufacturer part numbers on file: 3M1170D3-9A (Hi-Shear Corporation), 3M1170D3-9A (The Boeing Company Div Defense), TX1027D3-9A (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 3M1170D3-9A (Sps Technologies, Llc Dba PB Fasteners), 3M1170D3-9A (Heartland Precision Fasteners Inc) and 13 more.
Key specifications for 3M1170D3-9A: Head Height: 0.046 INCHES NOMINAL IN; Fastener Length: 0.907 INCHES NOMINAL IN; Thread Length: 0.345 INCHES NOMINAL IN; Nominal Thread Diameter: 0.190 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.