PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3-4X3 1-2Flange,railing

The Walworth Company · NSN 5670-00-994-5250 · FSC 5670 · No Item Name Available
Verified by PartsTable
NSN 5670-00-994-5250 — this item is cataloged by the U.S. Government under National Stock Number 5670-00-994-5250. Primary manufacturer part number: 3-4X3 1-2.
Features
  • Flange,railing — FSC 5670
  • Style Designator: ROUND, ONE BOLT HOLE CIRCLE
  • Nominal Thread Size: 0.750 INCHES IN
  • Nominal Pipe Size for Which Designed: 0.750 INCHES IN
  • Bolt Hole Quantity: 4
  • Flange Diameter: 3.125 INCHES NOMINAL IN
  • Flange Section Style: PLAIN FACE, LONG NECK
  • Material: IRON
Applications
  • Applications requiring Iron construction
General Description

The Flange,railing, cataloged under National Stock Number 5670-00-994-5250, is classified within Federal Supply Class 5670 (No Item Name Available) of the Construction and Building Materials group. The primary manufacturer of record is The Walworth Company. Government technical data includes 14 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5670-00-994-5250
Primary Part Number3-4X3 1-2
Item NameFlange,railing
FSC / FSG5670 / 56 — No Item Name Available
ManufacturerThe Walworth Company
StatusACTIVE
Style DesignatorROUND, ONE BOLT HOLE CIRCLE
Nominal Thread Size0.750 INCHES IN
Nominal Pipe Size for Which Designed0.750 INCHES IN
Bolt Hole Quantity4
Flange Diameter3.125 INCHES NOMINAL IN
Flange Section StylePLAIN FACE, LONG NECK
MaterialIRON
Bolt Hole Diameter0.250 INCHES NOMINAL IN
Thickness0.260 INCHES NOMINAL IN
Screw Thread Series DesignatorNPT
Neck Height0.420 INCHES NOMINAL IN
Neck Diameter1.500 INCHES NOMINAL IN
Surface TreatmentENAMEL
Bolt Circle Diameter2.313 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
9530-00-074-2934 INTERCHANGEABLE
Bar,metal
4730-01-110-5269 INTERCHANGEABLE
Nipple,pipe
Cross-Reference Index
Part NumberManufacturer
3-4X3 1-2 PRIMARY The Walworth Company (USA)
Related Parts
9530-00-074-2934INTERCHANGEABLE
BAR,METAL
4730-01-110-5269INTERCHANGEABLE
NIPPLE,PIPE

Frequently Asked Questions

What is NSN 5670-00-994-5250?

NSN 5670-00-994-5250 is a Flange,railing, manufactured by The Walworth Company, classified under FSC 5670 (No Item Name Available). Status: active.

What are the part numbers for NSN 5670-00-994-5250?

NSN 5670-00-994-5250 has 1 cross-referenced part number: 3-4X3 1-2 (The Walworth Company).

What NSN replaces 5670-00-994-5250?

There are 2 known substitutes for 5670-00-994-5250: 9530-00-074-2934, 4730-01-110-5269. Verify interchangeability with system specifications before substitution.

What are the specifications of 3-4X3 1-2?

Key specifications for 3-4X3 1-2: Style Designator: ROUND, ONE BOLT HOLE CIRCLE; Nominal Thread Size: 0.750 INCHES IN; Nominal Pipe Size for Which Designed: 0.750 INCHES IN; Bolt Hole Quantity: 4. 14 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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