PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CS4730-0121-A-03-GLPQReducer,pipe

Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) · NSN 4730-01-012-1673 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-012-1673 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-012-1673. Primary manufacturer part number: CS4730-0121-A-03-GLPQ.
Features
  • Reducer,pipe — FSC 4730
  • Nominal Overall Length: 1.010 INCHES IN
  • Material Document and Classification: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OR ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END IN
  • Operating Pressure: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Reducer Type: CONCENTRIC
  • Nominal Pipe Size Accommodated: 0.375 INCHES FIRST END IN
  • Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy 903 or Copper Alloy 922 Overall construction
General Description

The Reducer,pipe, cataloged under National Stock Number 4730-01-012-1673, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-012-1673
Primary Part NumberCS4730-0121-A-03-GLPQ
Item NameReducer,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerDla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
StatusACTIVE
Nominal Overall Length1.010 INCHES IN
Material Document and ClassificationQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OR ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Nominal Pipe Size Accommodated0.250 INCHES SECOND END IN
Operating Pressure400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Reducer TypeCONCENTRIC
Nominal Pipe Size Accommodated0.375 INCHES FIRST END IN
Connection TypeUNTHREADED INTERNAL PIPE ALL ENDS
Connection StyleSOCKET BRAZING RING (PIPE) ALL ENDS
Furnished Items and Quantity1 BRAZING RING
Specification/standard Data81349-MIL-F-1183J GOVERNMENT SPECIFICATION
MaterialCOPPER ALLOY 903 OR COPPER ALLOY 922 OVERALL
Nondefinitive Spec/std DataA TYPE AND 1 FIGURE
Maximum Operating Temp218.0 FAHRENHEIT SINGLE RESPONSE DEGF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5330-00-620-73595117061 INTERCHANGEABLE
Gasket
Rolls-Royce Solutions America Inc
Cross-Reference Index
Part NumberManufacturer
CS4730-0121-A-03-GLPQ Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
MIL-F-1183 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M1183/8-01A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-1183/8 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5150-059 Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc (USA)
5150-059 Flagg Stanley G & Co Inc Dba Flagg Brass (USA)
Related Parts
5330-00-620-7359INTERCHANGEABLE
GASKET
5117061

Frequently Asked Questions

What is NSN 4730-01-012-1673?

NSN 4730-01-012-1673 is a Reducer,pipe, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-012-1673?

NSN 4730-01-012-1673 has 6 cross-referenced part numbers: CS4730-0121-A-03-GLPQ (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), MIL-F-1183 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M1183/8-01A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-1183/8 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 5150-059 (Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc) and 1 more.

What NSN replaces 4730-01-012-1673?

There is 1 known substitute for 4730-01-012-1673: 5330-00-620-7359. Verify interchangeability with system specifications before substitution.

What are the specifications of CS4730-0121-A-03-GLPQ?

Key specifications for CS4730-0121-A-03-GLPQ: Nominal Overall Length: 1.010 INCHES IN; Material Document and Classification: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OR ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END IN; Operating Pressure: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 13 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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