PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

90377Test Set,ultrasonic

United Western Technologies Corp. · NSN 6635-00-038-4312 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-00-038-4312 — this item is cataloged by the U.S. Government under National Stock Number 6635-00-038-4312. Primary manufacturer part number: 90377.
Features
  • Test Set,ultrasonic — FSC 6635
  • Indicator Type: ELECTRON-RAY TUBE
  • Indicator Reading Type: SINGLE
  • Carrying Case: PROVIDED
  • Installation Design: PORTABLE
  • Test Type: DISTORTION
  • Indicator Design: DIRECT READING
  • Usage Design: EXTERNAL
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Test Set,ultrasonic, cataloged under National Stock Number 6635-00-038-4312, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is United Western Technologies Corp.. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6635-00-038-4312
Primary Part Number90377
Item NameTest Set,ultrasonic
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerUnited Western Technologies Corp.
StatusCANCELLED
Indicator TypeELECTRON-RAY TUBE
Indicator Reading TypeSINGLE
Carrying CasePROVIDED
Installation DesignPORTABLE
Test TypeDISTORTION
Indicator DesignDIRECT READING
Usage DesignEXTERNAL
Functional DescriptionUSED FOR ULTRASONIC BOND TESTING EQUIPMENT OF MRTALLIC & NONMETALLIC COMPOSITE MATERIAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4920-00-148-9396S1016-001 INTERCHANGEABLE
Detector Metallic-Non Me
Sps Technologies Llc Dba Shur-Lok Company Div Aerospace Engineered Products Division
6635-00-432-1540 INTERCHANGEABLE
Test Set,ultrasonic
6605-00-693-8388 INTERCHANGEABLE
Plotter-Protractor,air Navigatio
6115-00-837-4898 INTERCHANGEABLE
Generator Set,gasoline Engine
6740-00-929-4667MARK2 INTERCHANGEABLE
Printer,contact,photographic
Egoltronics Corporation
3895-01-059-1448MARK2 INTERCHANGEABLE
Roller,motorized
Porex Technologies Corp
4920-01-156-0953MARK IIC INTERCHANGEABLE
Detector,metallic,nonmetallic
Sps Technologies Llc Dba Shur-Lok Company Div Aerospace Engineered Products Division
6635-01-161-4551 INTERCHANGEABLE
Test Set,ultrasonic
4920-01-216-2568MARK II B INTERCHANGEABLE
Harmonic Bond Testr
United Western Technologies Corp.
6650-01-223-586010480 INTERCHANGEABLE
Refractometer
Leica Inc Surveying and Photogrammetry Systems Div
Cross-Reference Index
Part NumberManufacturer
MARKIIB United Western Technologies Corp. (USA)
MARKIIBAC/DCP Sps Technologies Llc Dba Shur-Lok Company Div Aerospace Engineered Products Division (USA)
A-A-58074 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MARK2BAC/DCP Sps Technologies Llc Dba Shur-Lok Company Div Aerospace Engineered Products Division (USA)
MARK2 Sps Technologies Llc Dba Shur-Lok Company Div Aerospace Engineered Products Division (USA)
2 Sps Technologies Llc Dba Shur-Lok Company Div Aerospace Engineered Products Division (USA)
MARKIIBAC/DCP United Western Technologies Corp. (USA)
MARK2BACDCF Sps Technologies Llc Dba Shur-Lok Company Div Aerospace Engineered Products Division (USA)
2BACDPC Sps Technologies Llc Dba Shur-Lok Company Div Aerospace Engineered Products Division (USA)
90377 PRIMARY United Western Technologies Corp. (USA)
6635-7392-7000 Defense Supply Center Richmond Industrial Plant Equipment /dla/ (USA)
Related Parts
4920-00-148-9396INTERCHANGEABLE
DETECTOR METALLIC-NON ME
S1016-001
6635-00-432-1540INTERCHANGEABLE
TEST SET,ULTRASONIC
6605-00-693-8388INTERCHANGEABLE
PLOTTER-PROTRACTOR,AIR NAVIGATIO
6115-00-837-4898INTERCHANGEABLE
GENERATOR SET,GASOLINE ENGINE
6740-00-929-4667INTERCHANGEABLE
PRINTER,CONTACT,PHOTOGRAPHIC
MARK2
3895-01-059-1448INTERCHANGEABLE
ROLLER,MOTORIZED
MARK2
4920-01-156-0953INTERCHANGEABLE
DETECTOR,METALLIC,NONMETALLIC
MARK IIC
6635-01-161-4551INTERCHANGEABLE
TEST SET,ULTRASONIC
4920-01-216-2568INTERCHANGEABLE
HARMONIC BOND TESTR
MARK II B
6650-01-223-5860INTERCHANGEABLE
REFRACTOMETER
10480
6635-01-290-2927INTERCHANGEABLE
TEST SET,ULTRASONIC
93601
4730-01-335-0228INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
5114048

Frequently Asked Questions

What is NSN 6635-00-038-4312?

NSN 6635-00-038-4312 is a Test Set,ultrasonic, manufactured by United Western Technologies Corp., classified under FSC 6635 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6635-00-038-4312?

NSN 6635-00-038-4312 has 11 cross-referenced part numbers: MARKIIB (United Western Technologies Corp.), MARKIIBAC/DCP (Sps Technologies Llc Dba Shur-Lok Company Div Aerospace Engineered Products Division), A-A-58074 (Federal Specifications Promulgated by General Services Administration Washington DC), MARK2BAC/DCP (Sps Technologies Llc Dba Shur-Lok Company Div Aerospace Engineered Products Division), MARK2 (Sps Technologies Llc Dba Shur-Lok Company Div Aerospace Engineered Products Division) and 6 more.

What NSN replaces 6635-00-038-4312?

There are 12 known substitutes for 6635-00-038-4312: 4920-00-148-9396, 6635-00-432-1540, 6605-00-693-8388 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 90377?

Key specifications for 90377: Indicator Type: ELECTRON-RAY TUBE; Indicator Reading Type: SINGLE; Carrying Case: PROVIDED; Installation Design: PORTABLE. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6635-00-038-4312 still in active supply?

NSN 6635-00-038-4312 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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