The Ring Clamp,collective, cataloged under National Stock Number 1615-01-255-4374, is classified within Federal Supply Class 1615 (Helicopter Rotor Blades, Drive Mechanisms and Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1615-01-255-4374 |
| Item Name | Ring Clamp,collective |
| FSC / FSG | 1615 / 16 — Helicopter Rotor Blades, Drive Mechanisms and Components |
| Status | ACTIVE |
| General Characteristics Item Description | 4340 ALLOY STEEL; 6.030 IN. OD; RAISED LIP 4.675 IN. OD,4.427 IN. ID,1.058 IN. H; 6 BOLT HOLES EQUALLY SPACED 0.269 IN. DIA; ALL SURFACES PAINTED ONE COAT MIL-P-23377 EPOXY POLYAMIDE PRIMER PER BPS 4451,TWO COATS MIL-C-83286 URETHANE PER BPS 4464,COLOR IS LUSTERLESS BLACK NO. 37038 PER FED STD 595 IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 214-010-414 | D/9 Drawing number reference only U.S. Government activity |
| 214-010-414-103 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1615-01-255-4374 is a Ring Clamp,collective, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
Key specifications for 1615-01-255-4374: General Characteristics Item Description: 4340 ALLOY STEEL; 6.030 IN. OD; RAISED LIP 4.675 IN. OD,4.427 IN. ID,1.058 IN. H; 6 BOLT HOLES EQUALLY SPACED 0.269 IN. DIA; ALL SURFACES PAINTED ONE COAT MIL-P-23377 EPOXY POLYAMIDE PRIMER PER BPS 4451,TWO COATS MIL-C-83286 URETHANE PER BPS 4464,COLOR IS LUSTERLESS BLACK NO. 37038 PER FED STD 595 IN. 1 specification is 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.
NSN 1615-01-255-4374 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.