The Washer,flat, cataloged under National Stock Number 5310-00-221-3099, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Smith and Smith Aircraft Co. Government technical data includes 11 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 | 5310-00-221-3099 |
| Primary Part Number | M2993 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Smith and Smith Aircraft Co |
| Status | ACTIVE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Thickness | 0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN |
| Material | STEEL COMP 1095 OVERALL |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | MIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OR SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | CADMIUM OVERALL |
| Hole Diameter | 1.253 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Center Hole Shape Style | ROUND |
| Peripheral Shape Style | ROUND |
| Overall Diameter | 1.820 INCHES MINIMUM AND 1.830 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| M2993 PRIMARY | Smith and Smith Aircraft Co (USA) |
NSN 5310-00-221-3099 is a Washer,flat, manufactured by Smith and Smith Aircraft Co, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-221-3099 has 1 cross-referenced part number: M2993 (Smith and Smith Aircraft Co).
There is 1 known substitute for 5310-00-221-3099: 6625-00-272-9885. Verify interchangeability with system specifications before substitution.
Key specifications for M2993: Cross-Sectional Shape Style: RECTANGULAR; Thickness: 0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN; Material: STEEL COMP 1095 OVERALL; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.