PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 240497
240497 ✓ 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 BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_style: DEE CHAMFER, head_height: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, head_diameter: 0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN, thread_length: 0.990 INCHES MINIMUM IN, fastener_length: 1.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-638-4965, 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
240497
NSN: 5306-00-638-4965
FSC: 5306
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
head_styleDEE CHAMFER
head_height0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
head_diameter0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN
thread_length0.990 INCHES MINIMUM IN
fastener_length1.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
nominal_thread_diameter0.312 INCHES IN
first_diameter_from_head0.309 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
minimum_tensile_strength130000 POUNDS PER SQUARE INCH LBS
third_diameter_from_head0.310 INCHES NOMINAL IN
thread_quantity_per_inch24
NSN5306-00-638-4965
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 240497 · 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
•
THREAD LENGTH: 0.990 INCHES MINIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 0.300 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
•
NONSTANDARD THREAD PITCH DIAMETER: +0.2800 TO 0.2824 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: IRON ALLOY 660 OVERALL
•
DISTANCE FROM CENTERLINE TO FLAT: 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
•
MINIMUM TENSILE STRENGTH: 130000 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.990 INCHES MINIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.300 INCHES NOMINAL IN
HEAD HEIGHT0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
NONSTANDARD THREAD PITCH DIAMETER+0.2800 TO 0.2824 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALIRON ALLOY 660 OVERALL
DISTANCE FROM CENTERLINE TO FLAT0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
MINIMUM TENSILE STRENGTH130000 POUNDS PER SQUARE INCH LBS
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY3
FIRST DIAMETER FROM HEAD0.309 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
240497Interchangeable
interchangeable cross-reference
interchangeable
18523Interchangeable
interchangeable cross-reference
interchangeable
PL86-75113CA7 FIG29 REF16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 240497?
240497 is a BOLT,EXTERNALLY RELIEVED BODY.
What parts can replace 240497?
There are 3 known substitutes for 240497: 240497, 18523, PL86-75113CA7 FIG29 REF16. Substitute compatibility should be verified for your specific system.
Is 240497 still available?
240497 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