PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 535778-1
535778-1 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416 OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, tooth_form: STANDARD, pitch_diameter: 1.0625 INCHES NOMINAL IN, pressure_angle: 20.0000 DEGREES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-147-6538, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
535778-1
NSN: 4730-00-147-6538
FSC: 4730
CAGE: 96214 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
materialSTEEL COMP 416 OVERALL
body_stylePLAIN, SOLID
bore_stylePLAIN BOTH ENDS
tooth_formSTANDARD
pitch_diameter1.0625 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity102
hardness_rating25.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM OVERALL
style_designatorHUBLESS
face_nominal_width0.065 INCHES IN
bore_nominal_diameter0.218 INCHES BOTH ENDS IN
nominal_outside_diameter1.082 INCHES IN
NSN4730-00-147-6538
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 535778-1 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MEDIA FOR WHICH DESIGNED: AIR FIRST RESPONSE
•
OPERATING PRESSURE: 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
SECOND LEG LENGTH: 0.614 INCHES NOMINAL IN
•
CONNECTION STYLE: FLARED FIRST QUICK DISCONNECT END
•
THREAD CLASS: 3A FIRST QUICK DISCONNECT END A
•
MAXIMUM OPERATING TEMP: 350.0 FAHRENHEIT FIRST RESPONSE DEGF
•
FIRST LEG LENGTH: 0.614 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
OPERATING PRESSURE500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SECOND LEG LENGTH0.614 INCHES NOMINAL IN
CONNECTION STYLEFLARED FIRST QUICK DISCONNECT END
THREAD CLASS3A FIRST QUICK DISCONNECT END A
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SECOND RESPONSE
MAXIMUM OPERATING TEMP350.0 FAHRENHEIT FIRST RESPONSE DEGF
FIRST LEG LENGTH0.614 INCHES NOMINAL IN
MAXIMUM OPERATING TEMP350.0 FAHRENHEIT SECOND RESPONSE DEGF
STYLE DESIGNATORCOUPLING ASSEMBLY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
535778-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 535778-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 535778-1?
535778-1 is a GEAR,SPUR.
What parts can replace 535778-1?
There is 1 known substitute for 535778-1: 535778-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 535778-1?
535778-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-147-6538. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 535778-1

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026