PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C3-4Cap,leakage

Norwalk Compreseer Company Inc Dba Norwalk Compressor Company · NSN 4310-00-072-6757 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-072-6757 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-072-6757. Primary manufacturer part number: C3-4.
Features
  • Cap,leakage — FSC 4310
  • General Characteristics Item Description: HEX HEAD LG IS 2.31 IN.; HEX HEAD W IS 2 IN.; 3 IN. O/A LG OF CAP; INTERIOR SECT. IS PARTIALLY THD; LG OF THD SECT. IS 1.500 IN.; O/A LG OF INTERIOR SECT. IS 2.250 IN.; OD OF THD SECT. IS 1.312 IN.; ID OF THD SECT. IS 1.250-8 IN.; LG FROM BOTTOM END OF CAP TO BOTTOM END OF THE BASE OF THD SECT. IS 0.375 IN.; W OF BASE OF THD SECT. IS 1.719 IN. IN
  • 2 verified cross-references
  • Primary manufacturer: Norwalk Compreseer Company Inc Dba Norwalk Compressor Company
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Cap,leakage, cataloged under National Stock Number 4310-00-072-6757, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Norwalk Compreseer Company Inc Dba Norwalk Compressor Company. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-00-072-6757
Primary Part NumberC3-4
Item NameCap,leakage
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerNorwalk Compreseer Company Inc Dba Norwalk Compressor Company
StatusACTIVE
General Characteristics Item DescriptionHEX HEAD LG IS 2.31 IN.; HEX HEAD W IS 2 IN.; 3 IN. O/A LG OF CAP; INTERIOR SECT. IS PARTIALLY THD; LG OF THD SECT. IS 1.500 IN.; O/A LG OF INTERIOR SECT. IS 2.250 IN.; OD OF THD SECT. IS 1.312 IN.; ID OF THD SECT. IS 1.250-8 IN.; LG FROM BOTTOM END OF CAP TO BOTTOM END OF THE BASE OF THD SECT. IS 0.375 IN.; W OF BASE OF THD SECT. IS 1.719 IN. IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3443-00-025-8349 INTERCHANGEABLE
Press,punch,power-Operated
3120-00-352-6162C34 INTERCHANGEABLE
Bearing,sleeve
Dana Off Highway Products, Llc
5220-00-411-7414PWA35054 INTERCHANGEABLE
Gage,profile
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5330-00-415-94093C34 INTERCHANGEABLE
Gasket Set
Tuthill Corporation Dba Tuthill Pump Group
6620-00-663-602425100A43A1B1 INTERCHANGEABLE
Indicator,pressure
Honeywell International Inc. Dba Honeywell International
3950-00-889-874409420W INTERCHANGEABLE
Hoist,chain
Columbus Mckinnon Corp
4940-01-013-1614 INTERCHANGEABLE
Blade Cutter Assembly,sewer
Cross-Reference Index
Part NumberManufacturer
C3-4 PRIMARY Norwalk Compreseer Company Inc Dba Norwalk Compressor Company (USA)
C3 Norwalk Compreseer Company Inc Dba Norwalk Compressor Company (USA)
Related Parts
3443-00-025-8349INTERCHANGEABLE
PRESS,PUNCH,POWER-OPERATED
3120-00-352-6162INTERCHANGEABLE
BEARING,SLEEVE
C34
5220-00-411-7414INTERCHANGEABLE
GAGE,PROFILE
PWA35054
5330-00-415-9409INTERCHANGEABLE
GASKET SET
3C34
6620-00-663-6024INTERCHANGEABLE
INDICATOR,PRESSURE
25100A43A1B1
3950-00-889-8744INTERCHANGEABLE
HOIST,CHAIN
09420W
4940-01-013-1614INTERCHANGEABLE
BLADE CUTTER ASSEMBLY,SEWER

Frequently Asked Questions

What is NSN 4310-00-072-6757?

NSN 4310-00-072-6757 is a Cap,leakage, manufactured by Norwalk Compreseer Company Inc Dba Norwalk Compressor Company, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-072-6757?

NSN 4310-00-072-6757 has 2 cross-referenced part numbers: C3-4 (Norwalk Compreseer Company Inc Dba Norwalk Compressor Company), C3 (Norwalk Compreseer Company Inc Dba Norwalk Compressor Company).

What NSN replaces 4310-00-072-6757?

There are 7 known substitutes for 4310-00-072-6757: 3443-00-025-8349, 3120-00-352-6162, 5220-00-411-7414 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C3-4?

Key specifications for C3-4: General Characteristics Item Description: HEX HEAD LG IS 2.31 IN.; HEX HEAD W IS 2 IN.; 3 IN. O/A LG OF CAP; INTERIOR SECT. IS PARTIALLY THD; LG OF THD SECT. IS 1.500 IN.; O/A LG OF INTERIOR SECT. IS 2.250 IN.; OD OF THD SECT. IS 1.312 IN.; ID OF THD SECT. IS 1.250-8 IN.; LG FROM BOTTOM END OF CAP TO BOTTOM END OF THE BASE OF THD SECT. IS 0.375 IN.; W OF BASE OF THD SECT. IS 1.719 IN. IN. 1 total characteristics are documented in the Federal Logistics Information System.

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