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PartsTable / COMPONENT / B122-2D-2
B122-2D-2 ✓ 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 LOCKNUT,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: PIPE LOCKNUT, nut_height: 0.156 INCHES NOMINAL IN, thread_class: 2B, thread_series: NPT, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-832-5670, 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
B122-2D-2
NSN: 4730-00-832-5670
FSC: 4730
CAGE: 95208 — PARKER-HANNIFIN CORPORATION DIV CYLINDER DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_stylePIPE LOCKNUT
nut_height0.156 INCHES NOMINAL IN
thread_class2B
thread_seriesNPT
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.625 INCHES NOMINAL IN
nominal_thread_size0.125 INCHES IN
packing_recess_depth0.010 INCHES NOMINAL IN
packing_recess_diameter0.500 INCHES NOMINAL IN
thread_quantity_per_inch27
NSN4730-00-832-5670
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B122-2D-2 · 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
•
NUT STYLE: PIPE LOCKNUT
•
SURFACE TREATMENT: CADMIUM OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL OVERALL
•
NOMINAL THREAD SIZE: 0.125 INCHES IN
•
THREAD CLASS: 2B
•
PACKING RECESS DIAMETER: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEPIPE LOCKNUT
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.125 INCHES IN
THREAD CLASS2B
PACKING RECESS DIAMETER0.500 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
THREAD SERIESNPT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
10177036Interchangeable
interchangeable cross-reference
interchangeable
350-TSE01-13Interchangeable
interchangeable cross-reference
interchangeable
8764823Interchangeable
interchangeable cross-reference
interchangeable
1787777-2Interchangeable
interchangeable cross-reference
interchangeable
4730006706031Interchangeable
interchangeable cross-reference
interchangeable
283569R1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B122-2D-2?
B122-2D-2 is a LOCKNUT,PIPE.
What parts can replace B122-2D-2?
There are 16 known substitutes for B122-2D-2: 10177036, 350-TSE01-13, 8764823 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B122-2D-2?
B122-2D-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-832-5670. 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