The Screw,close Tolerance, cataloged under National Stock Number 5305-01-393-0785, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies Llc Dba PB Fasteners Div PB Fasteners. Government technical data includes 19 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-393-0785 |
| Primary Part Number | PBF1417-5-9 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Fastener Length | 1.016 INCHES MINIMUM AND 1.046 INCHES MAXIMUM IN |
| Thread Length | 0.469 INCHES NOMINAL IN |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.577 INCHES MINIMUM AND 0.635 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 |
|---|---|
| PBF1417-5-9 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC1652-5-9 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| SC3102-5-9 | Howmet Global Fastening Systems Inc (USA) |
| 03A174-5-9 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| HR240-5-9 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HR240-5-9 | Hi-Shear Corporation (USA) |
| SLB146-5-9 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| Reference | Meaning |
|---|---|
| MIL-B-87114 | 4/1 Identification reference U.S. Government activity |
| 123743-5-9 | 5/2 Secondary reference U.S. Government activity |
| 03A174-5-9 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 03A174-5-9 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| T009-5-9 | 5/9 Secondary reference U.S. Government activity |
| T009-5-9 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| SC3102-5-9 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-393-0785 is a Screw,close Tolerance, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-393-0785 has 7 manufacturer part numbers on file: PBF1417-5-9 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), AIC1652-5-9 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), SC3102-5-9 (Howmet Global Fastening Systems Inc), 03A174-5-9 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), HR240-5-9 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 2 more.
1 possible match (shared part number, not a government interchangeability claim): 5975-01-461-3904. Verify interchangeability with system specifications before substitution.
Key specifications for PBF1417-5-9: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Fastener Length: 1.016 INCHES MINIMUM AND 1.046 INCHES MAXIMUM 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.