The Washer,flat, cataloged under National Stock Number 5310-01-256-5220, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bivar Inc. 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-256-5220 |
| Primary Part Number | 412-020 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Bivar Inc |
| Status | ACTIVE |
| Material Document and Classification | ASTM D4066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Peripheral Shape Style | ROUND |
| Cross-Sectional Shape Style | RECTANGULAR |
| Hole Diameter | 0.045 INCHES NOMINAL IN |
| Thickness | 0.020 INCHES NOMINAL IN |
| Center Hole Shape Style | ROUND |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Overall Diameter | 0.100 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 412-020 PRIMARY | Bivar Inc (USA) |
| 60710809-1 | Northrop Grumman Systems Corporation (USA) |
NSN 5310-01-256-5220 is a Washer,flat, manufactured by Bivar Inc, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-01-256-5220 has 2 cross-referenced part numbers: 412-020 (Bivar Inc), 60710809-1 (Northrop Grumman Systems Corporation).
There are 3 known substitutes for 5310-01-256-5220: 5330-01-087-3214, 6220-01-254-7913, 6530-01-527-5487. Verify interchangeability with system specifications before substitution.
Key specifications for 412-020: Material Document and Classification: ASTM D4066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Peripheral Shape Style: ROUND; Cross-Sectional Shape Style: RECTANGULAR; Hole Diameter: 0.045 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.