The Waveguide Assembly, cataloged under National Stock Number 5985-01-100-7900, 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 L3 Technologies, Inc. Div L3 Keo. Government technical data includes 30 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-100-7900 |
| Primary Part Number | 060041 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENTSEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.253 INCHES MINIMUM AND 0.253 INCHES MINIMUM AND 0.255 INCHES MAXIMUM SINGLE FLANGE0.255 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Quantity | 22 |
| Bend Angle in Deg | 90.0 SINGLE BEND E-PLANE90.0 SINGLE BEND E-PLANE |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 0.610 INCHES MINIMUM AND 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM0.640 INCHES MAXIMUM IN |
| Flexibility | RIGID SINGLE TUBING SEGMENTRIGID SINGLE TUBING SEGMENT |
| Flange Inside Diameter | 0.640 INCHES NOMINAL SINGLE FLANGE0.640 INCHES NOMINAL SINGLE FLANGE IN |
| Waveguide Inside Width | 0.420 INCHES NOMINAL0.420 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULARINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 0.860 INCHES MINIMUM AND 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM SINGLE FLANGE0.890 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Connecting Hole Diameter | 0.116 INCHES NOMINAL SECOND FLANGE SINGLE CONNECTION FACILITY0.116 INCHES NOMINAL SECOND FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 0.503 INCHES MINIMUM AND 0.503 INCHES MINIMUM AND 0.505 INCHES MAXIMUM SINGLE FLANGE0.505 INCHES MAXIMUM SINGLE FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIESRIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES |
| Nominal Thread Size | 0.112 INCHES FIRST FLANGE ALL CONNECTION FACILITIES0.112 INCHES FIRST FLANGE ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN |
| Flange Depth | 0.270 INCHES MINIMUM AND 0.270 INCHES MINIMUM AND 0.300 INCHES MAXIMUM SINGLE FLANGE0.300 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Outside Width | 0.860 INCHES MINIMUM AND 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM SINGLE FLANGE0.890 INCHES MAXIMUM SINGLE FLANGE IN |
| Insertion Loss in Decibels | 0.500.50 |
| Surface Treatment | LACQUER SINGLE TUBING SEGMENT INSIDE SURFACES |
| Surface Treatment | PRIMER AND PAINT SINGLE TUBING SEGMENT OUTSIDE SURFACES |
| Waveguide Inside Height | 0.170 INCHES NOMINAL0.170 INCHES NOMINAL IN |
| Thread Class | 2B FIRST FLANGE ALL CONNECTION FACILITIES2B FIRST FLANGE ALL CONNECTION FACILITIES |
| Material | COPPER ALLOY SINGLE TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY4 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) SECOND FLANGE SINGLE CONNECTION FACILITY4 UNTHREADED HOLE(S) SECOND FLANGE SINGLE CONNECTION FACILITY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) FIRST FLANGE ALL CONNECTION FACILITIES |
| Flange Style | COVER TYPE SECOND FLANGECOVER TYPE SECOND FLANGE |
| Flange Style | CHOKE TYPE FIRST FLANGECHOKE TYPE FIRST FLANGE |
| 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 |
|---|---|
| 055954 | L3 Technologies, Inc. Div L3 Keo (USA) |
| 060041 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| Reference | Meaning |
|---|---|
| TR495012 | C/1 Advisory reference — outside the item-of-supply concept Microwave Engineering Corporation |
| 933C055954 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
| 999C060041 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
NSN 5985-01-100-7900 is a Waveguide Assembly, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-100-7900 has 2 manufacturer part numbers on file: 055954 (L3 Technologies, Inc. Div L3 Keo), 060041 (L3 Technologies, Inc. Div L3 Keo).
2 possible matches (shared part number, not a government interchangeability claim): 6685-01-135-6921, 6515-01-530-8137. Verify interchangeability with system specifications before substitution.
Key specifications for 060041: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENTSEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.253 INCHES MINIMUM AND 0.253 INCHES MINIMUM AND 0.255 INCHES MAXIMUM SINGLE FLANGE0.255 INCHES MAXIMUM SINGLE FLANGE IN; Flange Quantity: 22; Bend Angle in Deg: 90.0 SINGLE BEND E-PLANE90.0 SINGLE BEND E-PLANE. 30 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 5985-01-100-7900 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.