The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-426-6728, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is American Standard Inc Westinghouse Air Brake Co Div. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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 | 5305-00-426-6728 |
| Primary Part Number | C1662 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | American Standard Inc Westinghouse Air Brake Co Div |
| Status | ACTIVE |
| Thread Quantity Per Inch | 9 |
| Head Style | HEXAGON |
| Thread Length | 2.000 INCHES NOMINAL IN |
| Width Between Flats | 1.312 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Fastener Length | 2.750 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Hardness Rating | 18.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL |
| Head Height | 0.547 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Material | STEEL COMP 1035 OVERALL |
| Thread Class | 2A A |
| Nominal Thread Diameter | 0.875 INCHES IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| C1662 | American Standard Inc Westinghouse Air Brake Co Div (USA) |
NSN 5305-00-426-6728 is a Screw,cap,hexagon Head, manufactured by American Standard Inc Westinghouse Air Brake Co Div, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-426-6728 has 1 cross-referenced part number: C1662 (American Standard Inc Westinghouse Air Brake Co Div).
There is 1 known substitute for 5305-00-426-6728: 9150-01-555-3598. Verify interchangeability with system specifications before substitution.
Key specifications for C1662: Thread Quantity Per Inch: 9; Head Style: HEXAGON; Thread Length: 2.000 INCHES NOMINAL IN; Width Between Flats: 1.312 INCHES NOMINAL IN. 13 total characteristics are documented in the Federal Logistics Information System.