PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A8274Adapter,straight,pipe to Tube

Mueller Brass Co. · NSN 4730-00-988-7786 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-988-7786 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-988-7786. Primary manufacturer part number: A8274.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Nominal Outside Diameter Tube Accommodated: 0.375 INCHES FIRST END IN
  • Thread Series Designator: NPSM SECOND END
  • Nominal Thread Size: 0.750 INCHES SECOND END IN
  • Specification/standard Data: 96906-MS35870 GOVERNMENT STANDARD
  • Connection Type: THREADED INTERNAL PIPE SECOND END
  • Seat Angle: 45.0 DEGREES FIRST END
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy 360 Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-988-7786, 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 Mueller Brass Co.. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-988-7786
Primary Part NumberA8274
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusACTIVE
Nominal Outside Diameter Tube Accommodated0.375 INCHES FIRST END IN
Thread Series DesignatorNPSM SECOND END
Nominal Thread Size0.750 INCHES SECOND END IN
Specification/standard Data96906-MS35870 GOVERNMENT STANDARD
Connection TypeTHREADED INTERNAL PIPE SECOND END
Seat Angle45.0 DEGREES FIRST END
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Thread Series DesignatorUNF FIRST END
Furnished Items and Quantity1 GASKET
Connection StylePLAIN (PIPE) SECOND END
MaterialCOPPER ALLOY 360 OVERALL
Material Document and ClassificationQQ-B-626,COMP 22 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Thread Class2A FIRST END A
Connection StyleFLARED (TUBE) FIRST END
Nominal Thread Size0.625 INCHES FIRST END IN
Nominal Overall Length1.250 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-280-2245 INTERCHANGEABLE
Jack,tip
3820-00-290-4981 INTERCHANGEABLE
Breaker,paving
2805-00-354-6307A8-274 INTERCHANGEABLE
Piston,internal Combustion Engin
Dresser Industries Inc Leroi Div
4820-00-393-623815-424 INTERCHANGEABLE
Disk,valve
Rix Industries
3460-00-494-1673K13 INTERCHANGEABLE
Wheel,abrasive
Sioux Tools Inc
2520-00-700-6795 INTERCHANGEABLE
Kit Repair Clutch
5365-00-811-6622K1-3 INTERCHANGEABLE
Spacer,sleeve
Roller Bearing Co of America, Inc Div Pic Design
5905-00-945-4267K13 INTERCHANGEABLE
Resistor,thermal
Thales Security Systems Uk Limited
3439-00-986-2582683 INTERCHANGEABLE
Kit,repair,printed Circuit
Gc/waldom Inc
5315-01-118-5091CR-207 INTERCHANGEABLE
Key,woodruff
Roller Bearing Co of America, Inc Div Pic Design
Cross-Reference Index
Part NumberManufacturer
K1-3 Imperial (USA)
A8274 PRIMARY Mueller Brass Co. (USA)
MS35870-4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5935-00-280-2245INTERCHANGEABLE
JACK,TIP
3820-00-290-4981INTERCHANGEABLE
BREAKER,PAVING
2805-00-354-6307INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
A8-274
4820-00-393-6238INTERCHANGEABLE
DISK,VALVE
15-424
3460-00-494-1673INTERCHANGEABLE
WHEEL,ABRASIVE
K13
2520-00-700-6795INTERCHANGEABLE
KIT REPAIR CLUTCH
5365-00-811-6622INTERCHANGEABLE
SPACER,SLEEVE
K1-3
5905-00-945-4267INTERCHANGEABLE
RESISTOR,THERMAL
K13
3439-00-986-2582INTERCHANGEABLE
KIT,REPAIR,PRINTED CIRCUIT
683
5315-01-118-5091INTERCHANGEABLE
KEY,WOODRUFF
CR-207
1285-01-196-7847INTERCHANGEABLE
POSITIONER
K13
4010-01-212-4801INTERCHANGEABLE
LINK,CHAIN,END

Frequently Asked Questions

What is NSN 4730-00-988-7786?

NSN 4730-00-988-7786 is a Adapter,straight,pipe to Tube, manufactured by Mueller Brass Co., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-988-7786?

NSN 4730-00-988-7786 has 3 cross-referenced part numbers: K1-3 (Imperial), A8274 (Mueller Brass Co.), MS35870-4 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-00-988-7786?

There are 12 known substitutes for 4730-00-988-7786: 5935-00-280-2245, 3820-00-290-4981, 2805-00-354-6307 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A8274?

Key specifications for A8274: Nominal Outside Diameter Tube Accommodated: 0.375 INCHES FIRST END IN; Thread Series Designator: NPSM SECOND END; Nominal Thread Size: 0.750 INCHES SECOND END IN; Specification/standard Data: 96906-MS35870 GOVERNMENT STANDARD. 16 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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