The Washer,flat, cataloged under National Stock Number 5310-01-256-5225, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Airdale Express Llc Div Airdale Express. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-256-5225 |
| Primary Part Number | 31-550ADX |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Airdale Express Llc Div Airdale Express |
| Status | ACTIVE |
| Material | COPPER ALLOY OVERALL |
| Thickness | 0.032 INCHES NOMINAL IN |
| Overall Diameter | 0.625 INCHES NOMINAL IN |
| Center Hole Shape Style | ROUND |
| Surface Treatment | NICKEL OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Hole Diameter | 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Peripheral Shape Style | ROUND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5310-01-256-5225 is a Washer,flat, manufactured by Airdale Express Llc Div Airdale Express, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-01-256-5225 has 2 cross-referenced part numbers: 31-550ADX (Airdale Express Llc Div Airdale Express), 31-550 (Federal Screw Products, Inc.).
There are 4 known substitutes for 5310-01-256-5225: 3220-00-248-0892, 2930-00-844-7423, 2510-01-313-9303 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 31-550ADX: Material: COPPER ALLOY OVERALL; Thickness: 0.032 INCHES NOMINAL IN; Overall Diameter: 0.625 INCHES NOMINAL IN; Center Hole Shape Style: ROUND. 8 total characteristics are documented in the Federal Logistics Information System.