The Washer,key, cataloged under National Stock Number 5310-01-364-3608, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rotor Clip Company, Inc.. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-364-3608 |
| Primary Part Number | 6100-21 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rotor Clip Company, Inc. |
| Status | ACTIVE |
| Internal Straight Key Width | 0.048 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.103 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN |
| Hardness Rating | 84.0 ROCKWELL C MINIMUM AND 86.0 ROCKWELL C MAXIMUM |
| Style Designator | KEY |
| Outside Diameter | 0.413 INCHES MINIMUM AND 0.423 INCHES MAXIMUM IN |
| Material Thickness | 0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN |
| Surface Treatment | OIL OVERALL |
| Material | STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1062 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1071 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1084 OR STEEL COMP 1085 OR STEEL COMP 1090 OVERALL |
| Internal Key Quantity | 6 |
| Hole Diameter | 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6100-21 PRIMARY | Rotor Clip Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 6100-21 | 3/9 Design control — primary reference U.S. Government activity |
| B4036708 | 5/9 Secondary reference Department of the Army Hq United States Army Communications Research and Development Command |
NSN 5310-01-364-3608 is a Washer,key, manufactured by Rotor Clip Company, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-364-3608 has 1 manufacturer part number on file: 6100-21 (Rotor Clip Company, Inc.).
Key specifications for 6100-21: Internal Straight Key Width: 0.048 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.103 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN; Hardness Rating: 84.0 ROCKWELL C MINIMUM AND 86.0 ROCKWELL C MAXIMUM; Style Designator: KEY. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.