Home · NSN 00-677-6480

NSN 00-677-6480 — Synchro,Differential Transmitter

NIIN 00-677-6480 · unit of issue EA · AAC Y (terminal item, replaced) · source of supply SMS

NSN 00-677-6480 is the national stock number for a synchro,differential transmitter. It cross-references to 5 manufacturer part numbers from 2 CAGE codes, including Sae International, Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M; the primary is 18TDX4B. The unit of issue is EA and the FLIS list price is $142.85.

No government purchase of this stock number is on our record yet. 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 2 CAGEs

open solicitations, all agencies

government buys 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
M20708/31-01C	0U583	Sae International	3 · Design control (vendor)	2 · Fully interchangeable
SAE-AS20708/31	0U583	Sae International	3 · Design control (vendor)	1 · Not fully interchangeable
18TDX4B	81349	Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only
18TDX4C	81349	Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	1 · Not fully interchangeable
M20708/31-01C	81349	Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only
MIL-S-20708/31	81349	Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only

Government demand

Nothing open right now. Watch this NSN and we will email you when it is solicited.

What the government paid

No government purchase on record for this NSN.

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices.

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 18TDX4B.

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

DLA management data

FLIS unit price: $142.85
Unit of issue: EA
Acquisition advice: Y — Terminal item, replaced
Source of supply: SMS
Effective: Jul 1, 2025

Item characteristics

Shoulder Diameter: INCHES MINIMUM 1.5615 AND INCHES MAXIMUM 1.5620
Pilot Diameter: INCHES MINIMUM 0.9370 AND INCHES MAXIMUM 0.9375
Overall Length: INCHES NOMINAL 3.2050
Flange Diameter: INCHES MINIMUM 1.7450 AND INCHES MAXIMUM 1.7500
Flange Thickness: INCHES NOMINAL 0.0930
Undercut Diameter: INCHES NOMINAL 1.6250
Undercut Width: INCHES NOMINAL 0.0780
Length: SHOULDER INCHES NOMINAL 0.1320
Shaft Diameter: SINGLE SHAFT INCHES MINIMUM 0.1870 AND INCHES MAXIMUM 0.1872
Shaft Length: SINGLE SHAFT INCHES NOMINAL 0.5400
Maximum Temp Rise: CELSIUS 20.0
Body Size: 18
Stator Input Voltage Rating In Volts: NOMINAL 90.0
Stator Input Current Rating: MILLIAMPERES NOMINAL 450.0
Stator Input Electrical Power Rating: WATTS NOMINAL 4.5
Frequency In Hertz: NOMINAL 400.0
Zso Impedance Magnitude In Ohms: MINIMUM 178.00 AND MAXIMUM 266.00
Zso Impedance Angle In Deg: MINIMUM 83.00 AND MAXIMUM 87.00
Zrs Impedance Magnitude In Ohms: MINIMUM 26.00 AND MAXIMUM 38.00
Zrs Impedance Angle In Deg: MINIMUM 47.00 AND MAXIMUM 56.00
Phase Shift Angle In Deg: INPUT TO OUTPUT NOMINAL 3.000
Electrical Error Angular Range In Minutes: -8.0 TO 8.0
Spline Tooth Quantity: 21
Actuator Friction Torque At Minus 55 Deg Celsius: INCH-OUNCES NOMINAL 0.10

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.