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PartsTable / COMPONENT / A99-8
A99-8 ✓ 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 COUNTER SHAFT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1112 OVERALL, body_type: SOLID, head_type: SOLID, drive_end_style: HEXAGON, connection_style: PLAIN, thread_direction: RIGHT-HAND EXTERNAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-554-7739, 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
A99-8
NSN: 4730-00-554-7739
FSC: 4730
CAGE: 96152 — BORG-WARNER CORP MARVEL-SCHEBLER/TILLOTSON DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 1112 OVERALL
body_typeSOLID
head_typeSOLID
drive_end_styleHEXAGON
connection_stylePLAIN
thread_directionRIGHT-HAND EXTERNAL
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.125 INCHES EXTERNAL IN
thread_series_designatorNPTF EXTERNAL
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
nominal_pipe_size_for_which_designed0.125 INCHES IN
NSN4730-00-554-7739
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: A99-8 · 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: STEEL COMP 1112 OVERALL
•
HEAD TYPE: SOLID
•
SURFACE TREATMENT: CADMIUM OVERALL
•
NOMINAL THREAD SIZE: 0.125 INCHES EXTERNAL IN
•
DRIVE END STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
BODY TYPE: SOLID
•
CONNECTION STYLE: PLAIN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 1112 OVERALL
HEAD TYPESOLID
SURFACE TREATMENTCADMIUM OVERALL
NOMINAL THREAD SIZE0.125 INCHES EXTERNAL IN
DRIVE END STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND EXTERNAL
BODY TYPESOLID
CONNECTION STYLEPLAIN
THREAD SERIES DESIGNATORNPTF EXTERNAL
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.125 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
1003-8Interchangeable
interchangeable cross-reference
interchangeable
8459Interchangeable
interchangeable cross-reference
interchangeable
912-5BInterchangeable
interchangeable cross-reference
interchangeable
272SC294Interchangeable
interchangeable cross-reference
interchangeable
998Interchangeable
interchangeable cross-reference
interchangeable
SCDL95743Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A99-8?
A99-8 is a COUNTER SHAFT.
What parts can replace A99-8?
There are 20 known substitutes for A99-8: 1003-8, 8459, 912-5B and 17 more. Substitute compatibility should be verified for your specific system.
Is A99-8 still available?
A99-8 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026