The Screw,close Tolerance, cataloged under National Stock Number 5305-01-342-8581, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-342-8581 |
| Primary Part Number | 7539-4-10 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Head Style | FLAT COUNTERSUNK |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.872 INCHES NOMINAL FIRST HOLE IN |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Quantity Per Inch | 28 |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN |
| Grip Length | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Thread Series Designator | UNF |
| Material | STEEL COMP 4130 OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Fastener Length | 1.035 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Head Diameter | 0.3898 INCHES MINIMUM AND 0.3908 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5305-01-342-8581 is a Screw,close Tolerance, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-342-8581 has 2 cross-referenced part numbers: 7S39-4-10 (The Boeing Company Div Legacy Am&m), 7539-4-10 (The Boeing Company Div Legacy Am&m).
There is 1 known substitute for 5305-01-342-8581: 2920-00-753-9410. Verify interchangeability with system specifications before substitution.
Key specifications for 7539-4-10: Thread Length: 0.425 INCHES NOMINAL IN; Head Style: FLAT COUNTERSUNK; Surface Treatment: CADMIUM AND CHROMATE OVERALL; Minimum Tensile Strength: 160000 POUNDS PER SQUARE INCH LBS. 20 total characteristics are documented in the Federal Logistics Information System.