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B434-2640-35 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

B434-2640-35: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY K-500 AND NICKEL ALLOY 502 OVERALL, thread_class: 3A A, fastener_length: 1.250 INCHES NOMINAL IN, locking_feature: PATCH OR PELLET OR STRIP THREADS, thread_direction: RIGHT-HAND, nominal_thread_diameter: 0.375 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-563-5763, 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
B434-2640-35
NSN: 5305-01-563-5763
FSC: 5305 — Screws
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialNICKEL ALLOY K-500 AND NICKEL ALLOY 502 OVERALL
thread_class3A A
fastener_length1.250 INCHES NOMINAL IN
locking_featurePATCH OR PELLET OR STRIP THREADS
special_featuresWHEN REFERRED TO THIS ITEM FASTENER CONTACT SURFACES AND MALE THREADS TO BE COATED WITH ANTI GALLING COMPOUND PER CID A-A-59004
thread_directionRIGHT-HAND
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUNRC
part_name_assigned_by_controlling_agencySCREW CAP SELF LOCKING SOCKET FLAT HEAD 82
NSN5305-01-563-5763
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B434-2640-35 · 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
•
FASTENER LENGTH: 1.250 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
LOCKING FEATURE: PATCH OR PELLET OR STRIP THREADS
•
THREAD CLASS: 3A A
•
THREAD QUANTITY PER INCH: 16
TECHNICAL CHARACTERISTICS
FASTENER LENGTH1.250 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPATCH OR PELLET OR STRIP THREADS
SPECIAL FEATURESWHEN REFERRED TO THIS ITEM FASTENER CONTACT SURFACES AND MALE THREADS TO BE COATED WITH ANTI GALLING COMPOUND PER CID A-A-59004
PART NAME ASSIGNED BY CONTROLLING AGENCYSCREW CAP SELF LOCKING SOCKET FLAT HEAD 82
THREAD CLASS3A A
THREAD QUANTITY PER INCH16
MATERIALNICKEL ALLOY K-500 AND NICKEL ALLOY 502 OVERALL
THREAD SERIES DESIGNATORUNRC
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
211066961Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B434-2640-35?
B434-2640-35 is a SCREW,CAP,SOCKET HEAD.
What parts can replace B434-2640-35?
There is 1 known substitute for B434-2640-35: 211066961. Substitute compatibility should be verified for your specific system.
What is the NSN for B434-2640-35?
B434-2640-35 is cataloged in the U.S. Government catalog under NSN 5305-01-563-5763. This indicates validated use in U.S. government and defense supply chains.
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