PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4377Union,pipe

Crystal Engineering Corp · NSN 4730-01-628-9185 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-628-9185 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-628-9185. Primary manufacturer part number: 4377.
Features
  • Union,pipe — FSC 4730
  • Nominal Overall Length: 1.6 INCHES IN
  • Nominal Width Across Flats: 0.56 INCHES CENTER BULKHEAD IN
  • 1 verified cross-reference
  • Primary manufacturer: Crystal Engineering Corp
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Union,pipe, cataloged under National Stock Number 4730-01-628-9185, 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 Crystal Engineering Corp. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-628-9185
Primary Part Number4377
Item NameUnion,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerCrystal Engineering Corp
StatusACTIVE
Nominal Overall Length1.6 INCHES IN
Nominal Width Across Flats0.56 INCHES CENTER BULKHEAD IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
6250-00-048-6367502X64 INTERCHANGEABLE
Lampholder
General Electric Company
4720-00-139-396828412 INTERCHANGEABLE
Hose,nonmetallic
Gates Corporation
5310-00-176-8109AN320-5 INTERCHANGEABLE
Nut,plain,slotted,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5130-00-430-22064377 INTERCHANGEABLE
Shaft,drive,worm Ge
Skil Corp
5905-00-456-533193J40R INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5910-00-487-286210669632-001 INTERCHANGEABLE
Capacitor,fixed,plastic Dielectr
Us Army Aviation and Missile Command
4820-00-509-7576437-7 INTERCHANGEABLE
Body,valve
Dynamic Air Engineering, Inc.
5330-01-272-1172 INTERCHANGEABLE
Gasket
Cross-Reference Index
Part NumberManufacturer
4377 Crystal Engineering Corp (USA)
Related Parts
6250-00-048-6367INTERCHANGEABLE
LAMPHOLDER
502X64
4720-00-139-3968INTERCHANGEABLE
HOSE,NONMETALLIC
28412
5310-00-176-8109INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
AN320-5
5130-00-430-2206INTERCHANGEABLE
SHAFT,DRIVE,WORM GE
4377
5905-00-456-5331INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
93J40R
5910-00-487-2862INTERCHANGEABLE
CAPACITOR,FIXED,PLASTIC DIELECTR
10669632-001
4820-00-509-7576INTERCHANGEABLE
BODY,VALVE
437-7
5330-01-272-1172INTERCHANGEABLE
GASKET

Frequently Asked Questions

What is NSN 4730-01-628-9185?

NSN 4730-01-628-9185 is a Union,pipe, manufactured by Crystal Engineering Corp, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-628-9185?

NSN 4730-01-628-9185 has 1 cross-referenced part number: 4377 (Crystal Engineering Corp).

What NSN replaces 4730-01-628-9185?

There are 8 known substitutes for 4730-01-628-9185: 6250-00-048-6367, 4720-00-139-3968, 5310-00-176-8109 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4377?

Key specifications for 4377: Nominal Overall Length: 1.6 INCHES IN; Nominal Width Across Flats: 0.56 INCHES CENTER BULKHEAD IN; Part Name Assigned by Controlling Agency: AN4 UNION SWIVEL (NON CRYSTAL). 3 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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