The Washer,flat, cataloged under National Stock Number 5310-01-221-3028, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Weil Pump Co Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-221-3028 |
| Primary Part Number | 79727-004 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Weil Pump Co Inc |
| Status | ACTIVE |
| Center Hole Shape Style | ROUND |
| Material | COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OVERALL |
| Material Document and Classification | QQ-B-637 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Peripheral Shape Style | ROUND |
| Overall Diameter | 1.250 INCHES NOMINAL IN |
| Thickness | 0.125 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Hole Diameter | 0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 5397 | Weil Pump Co Inc (USA) |
| A5395 PIECE 55 | Weil Pump Co Inc (USA) |
| 79727-004 PRIMARY | Weil Pump Co Inc (USA) |
NSN 5310-01-221-3028 is a Washer,flat, manufactured by Weil Pump Co Inc, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-01-221-3028 has 3 cross-referenced part numbers: 5397 (Weil Pump Co Inc), A5395 PIECE 55 (Weil Pump Co Inc), 79727-004 (Weil Pump Co Inc).
There are 11 known substitutes for 5310-01-221-3028: 5315-00-010-3387, 6105-00-084-3854, 5340-00-123-2931 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 79727-004: Center Hole Shape Style: ROUND; Material: COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OVERALL; Material Document and Classification: QQ-B-637 FED SPEC ALL MATERIAL RESPONSES OVERALL; Peripheral Shape Style: ROUND. 8 total characteristics are documented in the Federal Logistics Information System.