The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-275-1785, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rex Systems Incorporated Dba Rex Systems Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-275-1785 |
| Primary Part Number | 502A2-28 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Rex Systems Incorporated Dba Rex Systems Inc |
| Status | ACTIVE |
| Nut Height | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Nominal Thread Size | 0.250 INCHES IN |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| Nut Style | HEXAGON |
| Width Across Flats | 0.438 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Material | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 310 OR STEEL COMP 316 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 410 OR STEEL COMP 430 OVERALL |
| Material Document and Classification | MIL-S-854 MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Surface Treatment | PASSIVATE OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5310-00-275-1785 is a Nut,plain,hexagon, manufactured by Rex Systems Incorporated Dba Rex Systems Inc, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-275-1785 has 3 cross-referenced part numbers: 502A2-28 (Cardwell Condenser Corp Lapointe-Admiral Div), A1148 (Frontgrade Technologies Inc. Dba Frontgrade Technologies Inc.), 502A2-28 (Rex Systems Incorporated Dba Rex Systems Inc).
There are 8 known substitutes for 5310-00-275-1785: 8455-00-132-5014, 8455-00-255-3110, 2520-00-360-8129 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 502A2-28: Nut Height: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Thread Class: 2B; Thread Quantity Per Inch: 20; Thread Series: UNIFIED NATIONAL COARSE (UNC). 12 total characteristics are documented in the Federal Logistics Information System.