PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

691780Restrictor,fluid Flow

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 4730-00-165-4997 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-165-4997 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-165-4997. Primary manufacturer part number: 691780.
Features
  • Restrictor,fluid Flow — FSC 4730
  • Surface Treatment: PASSIVATE
  • Material: STEEL COMP 410
  • Outside Diameter: 0.216 INCHES NOMINAL IN
  • Thread Length: 0.150 INCHES MAXIMUM SECOND PROVISION IN
  • Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED
  • Orifice Diameter: 0.054 INCHES MAXIMUM IN
  • Design Type: TUBULAR
Applications
  • Applications requiring Steel Comp 410 construction
General Description

The Restrictor,fluid Flow, cataloged under National Stock Number 4730-00-165-4997, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 25 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-165-4997
Primary Part Number691780
Item NameRestrictor,fluid Flow
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Surface TreatmentPASSIVATE
MaterialSTEEL COMP 410
Outside Diameter0.216 INCHES NOMINAL IN
Thread Length0.150 INCHES MAXIMUM SECOND PROVISION IN
Thread ProvisionTHREADED LOCATION NOT OTHERWISE SPECIFIED
Orifice Diameter0.054 INCHES MAXIMUM IN
Design TypeTUBULAR
Thread DirectionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
Length0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
Thread Size Designator0.216-28 LOCATION NOT OTHERWISE SPECIFIED
Thread Class3A LOCATION NOT OTHERWISE SPECIFIED A
Thread Length0.150 INCHES MAXIMUM SECOND PROVISION IN
Thread SeriesUNF LOCATION NOT OTHERWISE SPECIFIED
Orifice Diameter0.054 INCHES MAXIMUM IN
Thread Length0.140 INCHES MINIMUM FIRST PROVISION IN
Surface TreatmentPASSIVATE
Thread ProvisionTHREADED LOCATION NOT OTHERWISE SPECIFIED
Thread Size Designator0.216-28 LOCATION NOT OTHERWISE SPECIFIED
Material Document and ClassificationAMS 5613, COMPOSITION SAE 51410 ASSN STD SINGLE MATERIAL RESPONSE
Thread SeriesUNF LOCATION NOT OTHERWISE SPECIFIED
Outside Diameter0.216 INCHES NOMINAL IN
Design TypeTUBULAR
MaterialSTEEL COMP 410
Material Document and ClassificationAMS 5613, COMPOSITION SAE 51410 ASSN STD SINGLE MATERIAL RESPONSE
Length0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5330-01-485-4756231856 INTERCHANGEABLE
Seal Inlet
Briggs and Stratton Corp
Cross-Reference Index
Part NumberManufacturer
691780 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
691780 Royal Oak Gage, Inc (USA)
691780 Turbo Power & Marine System Inc Sub of United Technologies Corp (USA)
Related Parts
5330-01-485-4756INTERCHANGEABLE
SEAL INLET
231856

Frequently Asked Questions

What is NSN 4730-00-165-4997?

NSN 4730-00-165-4997 is a Restrictor,fluid Flow, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-165-4997?

NSN 4730-00-165-4997 has 3 cross-referenced part numbers: 691780 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 691780 (Royal Oak Gage, Inc), 691780 (Turbo Power & Marine System Inc Sub of United Technologies Corp).

What NSN replaces 4730-00-165-4997?

There is 1 known substitute for 4730-00-165-4997: 5330-01-485-4756. Verify interchangeability with system specifications before substitution.

What are the specifications of 691780?

Key specifications for 691780: Surface Treatment: PASSIVATE; Material: STEEL COMP 410; Outside Diameter: 0.216 INCHES NOMINAL IN; Thread Length: 0.150 INCHES MAXIMUM SECOND PROVISION IN. 25 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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