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Technical Data Sheet
PartsTable / COMPONENT / 490312
490312 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, hole_type: DRILLED, head_style: DOUBLE HEXAGON W/HOLE, head_height: 0.330 INCHES NOMINAL IN, thread_class: 3A A, hole_diameter: 0.070 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-142-4926, 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
490312
NSN: 5306-00-142-4926
FSC: 5306
CAGE: 11449 — TURBO POWER & MARINE SYSTEM INC SUB OF UNITED TECHNOLOGIES CORP (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
hole_typeDRILLED
head_styleDOUBLE HEXAGON W/HOLE
head_height0.330 INCHES NOMINAL IN
thread_class3A A
hole_diameter0.070 INCHES NOMINAL IN
hole_quantity4
thread_length0.429 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES GRIP
fastener_length0.500 INCHES NOMINAL IN
hardness_rating248.0 BRINELL STANDARD MINIMUM AND 341.0 BRINELL STANDARD MAXIMUM OVERALL
thread_directionRIGHT-HAND
NSN5306-00-142-4926
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 490312 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
EXTENDED WASHER DIAMETER: 0.438 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.500 INCHES NOMINAL IN
•
HOLE TYPE: DRILLED
•
THREAD CLASS: 3A A
•
EXTENDED WASHER THICKNESS: 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
•
WIDTH BETWEEN FLATS: 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
SURFACE FINISH: 63.0 MICROINCHES BEARING SURFACE OF HEAD
TECHNICAL CHARACTERISTICS (FLIS)
EXTENDED WASHER DIAMETER0.438 INCHES NOMINAL IN
FASTENER LENGTH0.500 INCHES NOMINAL IN
HOLE TYPEDRILLED
THREAD CLASS3A A
EXTENDED WASHER THICKNESS0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
SURFACE FINISH63.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH32.0 MICROINCHES THREADS
HEAD HEIGHT0.330 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
200X4Interchangeable
interchangeable cross-reference
interchangeable
J512DFIG5AInterchangeable
interchangeable cross-reference
interchangeable
SAE J512 4-2 040102BInterchangeable
interchangeable cross-reference
interchangeable
ST2150-016Interchangeable
Same NIIN cross-reference
interchangeable
MS21289-06Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 490312?
490312 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 490312?
There are 5 known substitutes for 490312: 200X4, J512DFIG5A, SAE J512 4-2 040102B and 2 more. Substitute compatibility should be verified for your specific system.
Is 490312 still available?
490312 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