The Coupler,rotary,radio Frequency, cataloged under National Stock Number 5985-01-460-1835, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Frontgrade Technologies Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-460-1835 |
| Primary Part Number | 3145B |
| Item Name | Coupler,rotary,radio Frequency |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Material | ALUMINUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3145B PRIMARY | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3145B | 3/9 Design control — primary reference Kevlin Corporation Dba Cobham Sensor Systems Div Kevlin Division |
| 153-253-0001 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5985-01-460-1835 is a Coupler,rotary,radio Frequency, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-460-1835 has 1 manufacturer part number on file: 3145B (Frontgrade Technologies Inc.).
Key specifications for 3145B: Overall Length: 1.575 INCHES NOMINAL IN; Overall Width: 1.325 INCHES NOMINAL IN; Special Features: ROTARY JOINT,COAXIAL;HOUSING ALUM. ALLOY;FREQ. RANGE X & L BAND;450 WATTS MAX. OPER. POWER;INSERTION LOSS 0.2 DB;INSERT. LOSS WOR (ROTATIONAL) 0.05DB OVER 360 DEG;VSWR 1.25:1 OVER 360 DEG;VSWR WOW (ROTATIONAL) .02 OVER 360 DEG;RF NOISE 0.05DB MAX.;WT. 3.0 OUNCES MAX. OZ; End Item Identification: JOINT STARS RD, CAGE 95542. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5985-01-460-1835 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.