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Technical Data Sheet
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62991-2 — Technical Data Sheet

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— · 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 PISTON,RATCHET,PITCH LOCK is a the manufacturer industrial component. Key specifications include MATERIAL: COPPER OVERALL, CONNECTION TYPE: UNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS, CONNECTION STYLE: CRIMPED (TUBE) ALL ENDSCRIMPED (TUBE) ALL ENDS, STYLE DESIGNATOR: PLAIN W/CENTER GROOVEPLAIN W/CENTER GROOVE, NOMINAL OVERALL LENGTH: 1.531 INCHES1.531 INCHES IN, SPECIFICATION/STANDARD DATA: 96906-MS35927 GOVERNMENT STANDARD96906-MS35927 GOVERNMENT STANDARD. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-264-9153, 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
62991-2
NSN: 4730-00-264-9153
FSC: 4730
CAGE: 90598 — ENGINEERED AIR SYSTEMS, INC. DBA DRS SUSTAINMENT SYSTEMS (USA)
SPECIFICATIONS
MATERIALCOPPER OVERALL
CONNECTION TYPEUNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS
CONNECTION STYLECRIMPED (TUBE) ALL ENDSCRIMPED (TUBE) ALL ENDS
STYLE DESIGNATORPLAIN W/CENTER GROOVEPLAIN W/CENTER GROOVE
NOMINAL OVERALL LENGTH1.531 INCHES1.531 INCHES IN
SPECIFICATION/STANDARD DATA96906-MS35927 GOVERNMENT STANDARD96906-MS35927 GOVERNMENT STANDARD
MATERIAL DOCUMENT AND CLASSIFICATIONWW-T-799,TYPE K OR L FED SPEC SINGLE MATERIAL RESPONSE OVERALLWW-T-799,TYPE K OR L FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES ALL ENDS0.375 INCHES ALL ENDS IN
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED0.032 INCHES ALL ENDS0.032 INCHES ALL ENDS IN
NSN4730-00-264-9153
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 62991-2 · 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
•
MATERIAL: COPPER OVERALL
•
NOMINAL OVERALL LENGTH: 1.531 INCHES1.531 INCHES IN
•
SPECIFICATION/STANDARD DATA: 96906-MS35927 GOVERNMENT STANDARD96906-MS35927 GOVERNMENT STANDARD
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES ALL ENDS0.375 INCHES ALL ENDS IN
•
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED: 0.032 INCHES ALL ENDS0.032 INCHES ALL ENDS IN
•
CONNECTION STYLE: CRIMPED (TUBE) ALL ENDSCRIMPED (TUBE) ALL ENDS
•
STYLE DESIGNATOR: PLAIN W/CENTER GROOVEPLAIN W/CENTER GROOVE
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER OVERALL
NOMINAL OVERALL LENGTH1.531 INCHES1.531 INCHES IN
SPECIFICATION/STANDARD DATA96906-MS35927 GOVERNMENT STANDARD96906-MS35927 GOVERNMENT STANDARD
CONNECTION TYPEUNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES ALL ENDS0.375 INCHES ALL ENDS IN
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED0.032 INCHES ALL ENDS0.032 INCHES ALL ENDS IN
CONNECTION STYLECRIMPED (TUBE) ALL ENDSCRIMPED (TUBE) ALL ENDS
STYLE DESIGNATORPLAIN W/CENTER GROOVEPLAIN W/CENTER GROOVE
MATERIAL DOCUMENT AND CLASSIFICATIONWW-T-799,TYPE K OR L FED SPEC SINGLE MATERIAL RESPONSE OVERALLWW-T-799,TYPE K OR L FED SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
11447Interchangeable
interchangeable cross-reference
interchangeable
AN1Interchangeable
interchangeable cross-reference
interchangeable
B16.22Interchangeable
interchangeable cross-reference
interchangeable
A-A-59449Interchangeable
interchangeable cross-reference
interchangeable
5520K43Interchangeable
interchangeable cross-reference
interchangeable
MS35927-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 62991-2?
62991-2 is a PISTON,RATCHET,PITCH LOCK.
What parts can replace 62991-2?
There are 28 known substitutes for 62991-2: 11447, AN1, B16.22 and 25 more. Substitute compatibility should be verified for your specific system.
Is 62991-2 still available?
62991-2 is currently cancelled.
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Last verified: September 2026