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PartsTable / COMPONENT / 205697A
205697A ✓ 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 STUD,CYLINDER HEAD,SPECIAL is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-739-6645, 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
205697A
NSN: 5307-00-739-6645
FSC: 5307
CAGE: 1ML14 — BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING (USA)
SPECIFICATIONS
Part Number205697A
NSN5307-00-739-6645
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 205697A · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL SAE 4140,RC26 MIN,RC 32 MAX ROCKWELL HARDNESS,TENSILE STRENGTH 150000 PSI MIN,7.000 IN. LG O/A,NUT END 0.750 IN. LG,THREAD SIZE 3/8-24,STUD END 0.750 IN. LG,THREAD SIZE 5/8-11,OTHER THREAD 1.625 FROM NUT END,1.000 IN. LG,THREAD SIZE 5/8-18,SHOULDER 5.375 IN. LG,0.625 IN. DIA,STEPPED TO 0.375 IN. DIA,1.625 IN. LG IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL SAE 4140,RC26 MIN,RC 32 MAX ROCKWELL HARDNESS,TENSILE STRENGTH 150000 PSI MIN,7.000 IN. LG O/A,NUT END 0.750 IN. LG,THREAD SIZE 3/8-24,STUD END 0.750 IN. LG,THREAD SIZE 5/8-11,OTHER THREAD 1.625 FROM NUT END,1.000 IN. LG,THREAD SIZE 5/8-18,SHOULDER 5.375 IN. LG,0.625 IN. DIA,STEPPED TO 0.375 IN. DIA,1.625 IN. LG IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
A1026Interchangeable
interchangeable cross-reference
interchangeable
6651Interchangeable
interchangeable cross-reference
interchangeable
A908AInterchangeable
interchangeable cross-reference
interchangeable
P-1069Interchangeable
interchangeable cross-reference
interchangeable
P-108803Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 205697A?
205697A is a STUD,CYLINDER HEAD,SPECIAL.
What parts can replace 205697A?
There are 5 known substitutes for 205697A: A1026, 6651, A908A and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 205697A?
205697A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-739-6645. 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