The Bushing,sleeve, cataloged under National Stock Number 3120-01-320-8668, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is R.g.h. Associates, Inc. Dba Richards Screw Machine. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-320-8668 |
| Primary Part Number | B817Y3-70 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | R.g.h. Associates, Inc. Dba Richards Screw Machine |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flange Outside Diameter | 0.3712 INCHES MINIMUM AND 0.3976 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.2610 INCHES MINIMUM AND 0.2620 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.1910 INCHES MINIMUM AND 0.1960 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Flange Width | 0.0230 INCHES MINIMUM AND 0.0280 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3120-01-320-8668 is a Bushing,sleeve, manufactured by R.g.h. Associates, Inc. Dba Richards Screw Machine, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-320-8668 has 2 manufacturer part numbers on file: B817Y3-70 (R.g.h. Associates, Inc. Dba Richards Screw Machine), P817Y3-70 (Fastener Technology Corp).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-320-8673. Verify interchangeability with system specifications before substitution.
Key specifications for B817Y3-70: Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Outside Diameter: 0.3712 INCHES MINIMUM AND 0.3976 INCHES MAXIMUM IN; Body Outside Diameter: 0.2610 INCHES MINIMUM AND 0.2620 INCHES MAXIMUM IN. 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.