The Waveguide Assembly, cataloged under National Stock Number 5985-01-313-3335, 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 24 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-313-3335 |
| Primary Part Number | 654VE7148-3 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Tubing Wall Construction Style | CORRUGATED ALL TUBING SEGMENT |
| Flange Inside Height | 1.006 INCHES MINIMUM AND 1.009 INCHES MAXIMUM ALL FLANGES IN |
| Flange Quantity | 2 |
| Waveguide First Leg Length | 4.000 INCHES NOMINAL IN |
| Waveguide Second Leg Length | 4.370 INCHES NOMINAL IN |
| Style Designator | THREE BEND TYPE |
| Flexibility | FLEXIBLE ALL TUBING SEGMENT |
| Waveguide Inside Width | 1.872 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 20.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Connecting Hole Diameter | 0.199 INCHES MINIMUM AND 0.203 INCHES MAXIMUM ALL FLANGES ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 2.006 INCHES MINIMUM AND 2.009 INCHES MAXIMUM ALL FLANGES IN |
| Waveguide Fourth Leg Length | 3.940 INCHES NOMINAL IN |
| Waveguide Outside Height | 1.000 INCHES NOMINAL IN |
| Waveguide Outside Width | 2.000 INCHES NOMINAL IN |
| Flange Depth | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM ALL FLANGES IN |
| Tubing Twist Type | STEP TWIST ALL TUBING SEGMENT |
| Tubing Twist Angle in Deg | 90.0 ALL TUBING SEGMENT |
| Waveguide Inside Height | 0.872 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Outside Diameter | 3.610 INCHES MINIMUM AND 3.640 INCHES MAXIMUM ALL FLANGES IN |
| Flange Style | COVER TYPE ALL FLANGES |
| Waveguide Third Leg Length | 3.940 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 654VE7148-3 | Frontgrade Technologies Inc. (USA) |
| TRFT-78002 | Microwave Engineering Corporation (USA) |
| 654VE7148-3 | Microtech Inc Dba Microtech Inc (USA) |
| Reference | Meaning |
|---|---|
| 654VE7148-3 | 5/9 Secondary reference Advanced Technical Materials, Inc. Dba a T M |
| 654VE7148-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-313-3335 is a Waveguide Assembly, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-313-3335 has 3 manufacturer part numbers on file: 654VE7148-3 (Frontgrade Technologies Inc.), TRFT-78002 (Microwave Engineering Corporation), 654VE7148-3 (Microtech Inc Dba Microtech Inc).
Key specifications for 654VE7148-3: Tubing Wall Construction Style: CORRUGATED ALL TUBING SEGMENT; Flange Inside Height: 1.006 INCHES MINIMUM AND 1.009 INCHES MAXIMUM ALL FLANGES IN; Flange Quantity: 2; Waveguide First Leg Length: 4.000 INCHES NOMINAL IN. 24 specifications are 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 5985-01-313-3335 has DEMIL Code D. 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.