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Technical Data Sheet
PartsTable / COMPONENT / 4FR316-MERCURY FREE
4FR316-MERCURY FREE ✓ 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 FERRULE,BRAZING,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316L, flange_width: 0.036 INCHES NOMINAL IN, overall_length: 0.082 INCHES NOMINAL IN, style_designator: GASKET SEAL, casehardening_indicator: NOT CASEHARDENED, flange_outside_diameter: 0.342 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-013-6632, 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
4FR316-MERCURY FREE
NSN: 4730-01-013-6632
FSC: 4730
CAGE: 28968 — CIRCOR INSTRUMENTATION TECHNOLOGIES, INC. DBA HOKE GYROLOK (USA)
SPECIFICATIONS
materialSTEEL COMP 316L
flange_width0.036 INCHES NOMINAL IN
overall_length0.082 INCHES NOMINAL IN
style_designatorGASKET SEAL
casehardening_indicatorNOT CASEHARDENED
flange_outside_diameter0.342 INCHES NOMINAL IN
sleeve_outside_diameter0.295 INCHES NOMINAL IN
material_document_and_classificationASTM A-269, COMP 316L ASSN STD SINGLE MATERIAL RESPONSE
hose/tube_outside_diameter_for_which_designed0.250 INCHES NOMINAL IN
reference_number_differentiating_characteristicsFREE OF MERCURY CONTAMINATION
NSN4730-01-013-6632
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4FR316-MERCURY FREE · 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
•
FLANGE WIDTH: 0.036 INCHES NOMINAL IN
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.250 INCHES NOMINAL IN
•
FLANGE OUTSIDE DIAMETER: 0.342 INCHES NOMINAL IN
•
SLEEVE OUTSIDE DIAMETER: 0.295 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 316L
•
STYLE DESIGNATOR: GASKET SEAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A-269, COMP 316L ASSN STD SINGLE MATERIAL RESPONSE
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: FREE OF MERCURY CONTAMINATION
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE WIDTH0.036 INCHES NOMINAL IN
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.250 INCHES NOMINAL IN
FLANGE OUTSIDE DIAMETER0.342 INCHES NOMINAL IN
SLEEVE OUTSIDE DIAMETER0.295 INCHES NOMINAL IN
MATERIALSTEEL COMP 316L
STYLE DESIGNATORGASKET SEAL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A-269, COMP 316L ASSN STD SINGLE MATERIAL RESPONSE
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSFREE OF MERCURY CONTAMINATION
CASEHARDENING INDICATORNOT CASEHARDENED
OVERALL LENGTH0.082 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
530475-4Interchangeable
interchangeable cross-reference
interchangeable
4BF4-316Interchangeable
interchangeable cross-reference
interchangeable
SS-404-1Interchangeable
interchangeable cross-reference
interchangeable
4FR316Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4FR316-MERCURY FREE?
4FR316-MERCURY FREE is a FERRULE,BRAZING,TUBE FITTING.
What parts can replace 4FR316-MERCURY FREE?
There are 4 known substitutes for 4FR316-MERCURY FREE: 530475-4, 4BF4-316, SS-404-1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4FR316-MERCURY FREE?
4FR316-MERCURY FREE is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-013-6632. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026