PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31811Expansion Joint,pipe

Hyspan Precision Products, Inc. · NSN 4730-01-315-7779 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-315-7779 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-315-7779. Primary manufacturer part number: 31811.
Features
  • Expansion Joint,pipe — FSC 4730
  • End Connection Type: WELDED
  • 2 verified cross-references
  • Primary manufacturer: Hyspan Precision Products, Inc.
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Expansion Joint,pipe, cataloged under National Stock Number 4730-01-315-7779, 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 Hyspan Precision Products, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-315-7779
Primary Part Number31811
Item NameExpansion Joint,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerHyspan Precision Products, Inc.
StatusACTIVE
End Connection TypeWELDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5940-00-236-7176 INTERCHANGEABLE
Terminal,lug
3455-00-268-951259-10085 INTERCHANGEABLE
Cutter,milling,screw Slotting
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
3010-01-167-748731811 INTERCHANGEABLE
Bellows,pressure
Senior Operations Llc Dba Metal Bellows Div Metal Bellows
4820-01-407-323531811 INTERCHANGEABLE
Sleeve,directional Control Linea
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
31811 Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc (USA)
31811 PRIMARY Hyspan Precision Products, Inc. (USA)
Related Parts
5940-00-236-7176INTERCHANGEABLE
TERMINAL,LUG
3455-00-268-9512INTERCHANGEABLE
CUTTER,MILLING,SCREW SLOTTING
59-10085
3010-01-167-7487INTERCHANGEABLE
BELLOWS,PRESSURE
31811
4820-01-407-3235INTERCHANGEABLE
SLEEVE,DIRECTIONAL CONTROL LINEA
31811

Frequently Asked Questions

What is NSN 4730-01-315-7779?

NSN 4730-01-315-7779 is a Expansion Joint,pipe, manufactured by Hyspan Precision Products, Inc., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-315-7779?

NSN 4730-01-315-7779 has 2 cross-referenced part numbers: 31811 (Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc), 31811 (Hyspan Precision Products, Inc.).

What NSN replaces 4730-01-315-7779?

There are 4 known substitutes for 4730-01-315-7779: 5940-00-236-7176, 3455-00-268-9512, 3010-01-167-7487 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31811?

Key specifications for 31811: End Connection Type: WELDED; Overall Length: 27.000 INCHES NOMINAL IN. 2 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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