Home · FSC 5985 Antennas, Waveguides, And Related Equipment · NSN 5985-01-274-6602

NSN 5985-01-274-6602 — Waveguide Assembly

NIIN 01-274-6602 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

NSN 5985-01-274-6602 is the national stock number for a waveguide assembly in federal supply class 5985 (Antennas, Waveguides, And Related Equipment). It cross-references to 2 manufacturer part numbers from 3 CAGE codes, including Navair And Navsea Managed Original Design Activity Dwg Not Material/Parts Supplier, Frontgrade Technologies Inc., Litton Systems Inc Airtron Div; the primary is 3258543. The unit of issue is EA and the FLIS list price is $20,959.76.

The U.S. government has bought this item 1 time on record, 1 of them in the last 24 months, most recently on August 18, 2026 for $13,810 from Frontgrade Technologies Inc.. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.

part numbers from 3 CAGEs

open solicitations, all agencies

government buy in 24 months

sellers with confirmed stock

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Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part number	CAGE	Manufacturer	Reference	Variation
3258543	10001	Navair And Navsea Managed Original Design Activity Dwg Not Material/Parts Supplier	3 · Design control (vendor)	9 · Reference only
433544	66544	Frontgrade Technologies Inc.	5 · Secondary reference	2 · Fully interchangeable
433544	80006	Litton Systems Inc Airtron Div	5 · Secondary reference	9 · Reference only

Government demand

Nothing open right now. Last government buy Aug 18, 2026. Watch this NSN and we will email you when it is solicited.

What the government paid

Date	Vendor	Qty	Unit cost	Amount	Buyer	Reference
Aug 18, 2026	Frontgrade Technologies Inc. 66544			$13,810	Dla	SPE7M126P9661

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 1 buy on record in total.

Sellers with confirmed stock

No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on 3258543.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price: $20,959.76
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2026

Item characteristics

Flange Quantity: 2
Flange Inside Width: ALL FLANGES INCHES NOMINAL 2.840
Flange Inside Height: ALL FLANGES INCHES NOMINAL 0.670
Flange Outside Width: ALL FLANGES INCHES NOMINAL 3.750
Flange Outside Height: ALL FLANGES INCHES NOMINAL 2.330
Flange Depth: ALL FLANGES INCHES NOMINAL 0.310
Flange Connecting Hole Diameter: ALL FLANGES ALL CONNECTION FACILITIES INCHES NOMINAL 0.255
Voltage Standing Wave Ratio: 1.30
Insertion Loss In Decibels: 0.25
Waveguide Outside Width: INCHES MAXIMUM 3.720
Waveguide Inside Width: INCHES NOMINAL 2.840
Waveguide Inside Height: INCHES NOMINAL 0.670
Waveguide Outside Height: INCHES MAXIMUM 2.110
Flange Connecting Facility And Quantity: ALL FLANGES ALL CONNECTION FACILITIES UNTHREADED HOLE(S) 8
Waveguide Length: INCHES NOMINAL 13.000
Flexibility: SINGLE TUBING SEGMENT RIGID
Material: SINGLE TUBING SEGMENT AND FLANGE ALUMINUM

About this page

An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.