PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C-63Test Block

Page-Wilson Corp Measurement Systems · NSN 6635-01-129-2970 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-01-129-2970 — this item is cataloged by the U.S. Government under National Stock Number 6635-01-129-2970. Primary manufacturer part number: C-63.
Features
  • Test Block — FSC 6635
  • 1 verified cross-reference
  • Primary manufacturer: Page-Wilson Corp Measurement Systems
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Test Block, cataloged under National Stock Number 6635-01-129-2970, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Page-Wilson Corp Measurement Systems. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameTest Block
FSC / FSG6635 — No Item Name Available (FSG 66)
ManufacturersPage-Wilson Corp Measurement Systems (CAGE 82729)
Technical Specifications
ParameterValue
NSN6635-01-129-2970
Primary Part NumberC-63
Item NameTest Block
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerPage-Wilson Corp Measurement Systems
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2640-00-157-0057C6-3 INTERCHANGEABLE
Patch,pneumatic Tire Repair
Technical Rubber Company, Inc.
3830-00-160-7568 INTERCHANGEABLE
Housing
5999-00-189-4913 INTERCHANGEABLE
Cap,electrical
5975-00-245-1691 INTERCHANGEABLE
Conduit Outlet
5325-00-366-6538 INTERCHANGEABLE
Ring,retaining
5977-00-371-5439C63B INTERCHANGEABLE
Holder Assembly,electrical Conta
Hobart Bros Co
4330-00-416-73091-414-B INTERCHANGEABLE
Filter Element,fluid
Baldwin Filters
3040-00-866-3963S3501Y-C063 INTERCHANGEABLE
Clamp,hub
Designatronics Incorporated Div Sterling Instruments Div
3040-01-040-2224C63 INTERCHANGEABLE
Clamp,hub
Steego Corp
3020-01-320-5244 INTERCHANGEABLE
Chain,block
Cross-Reference Index
Part NumberManufacturer
C-63 Page-Wilson Corp Measurement Systems (USA)
Related Parts
2640-00-157-0057INTERCHANGEABLE
PATCH,PNEUMATIC TIRE REPAIR
C6-3
3830-00-160-7568INTERCHANGEABLE
HOUSING
5999-00-189-4913INTERCHANGEABLE
CAP,ELECTRICAL
5975-00-245-1691INTERCHANGEABLE
CONDUIT OUTLET
5325-00-366-6538INTERCHANGEABLE
RING,RETAINING
5977-00-371-5439INTERCHANGEABLE
HOLDER ASSEMBLY,ELECTRICAL CONTA
C63B
4330-00-416-7309INTERCHANGEABLE
FILTER ELEMENT,FLUID
1-414-B
3040-00-866-3963INTERCHANGEABLE
CLAMP,HUB
S3501Y-C063
3040-01-040-2224INTERCHANGEABLE
CLAMP,HUB
C63
3020-01-320-5244INTERCHANGEABLE
CHAIN,BLOCK
5340-01-659-2088INTERCHANGEABLE
HINGE,ACCESS DOOR
C6-3
5940-01-722-3913INTERCHANGEABLE
COVER,TERMINAL
C-6-3

Frequently Asked Questions

What is NSN 6635-01-129-2970?

NSN 6635-01-129-2970 is a Test Block, manufactured by Page-Wilson Corp Measurement Systems, classified under FSC 6635 (No Item Name Available). Status: active.

What are the part numbers for NSN 6635-01-129-2970?

NSN 6635-01-129-2970 has 1 cross-referenced part number: C-63 (Page-Wilson Corp Measurement Systems).

What NSN replaces 6635-01-129-2970?

There are 12 known substitutes for 6635-01-129-2970: 2640-00-157-0057, 3830-00-160-7568, 5999-00-189-4913 and 9 more. Verify interchangeability with system specifications before substitution.

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