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Technical Data Sheet
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AS3237-28 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AS3237-28: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, head_style: DOUBLE HEXAGON W/HOLE, head_height: 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN, thread_class: 3A A, fastener_length: 1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN, width_between_flats: 0.3125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-666-0935, 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
AS3237-28
NSN: 5306-01-666-0935
FSC: 5306 — Bolts
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
head_styleDOUBLE HEXAGON W/HOLE
head_height0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
thread_class3A A
fastener_length1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN
width_between_flats0.3125 INCHES NOMINAL IN
nominal_thread_diameter0.250 INCHES IN
extended_washer_diameter0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
extended_washer_thickness0.60 INCHES MINIMUM IN
NSN5306-01-666-0935
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AS3237-28 · 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 THICKNESS: 0.60 INCHES MINIMUM IN
•
HEAD HEIGHT: 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: DOUBLE HEXAGON W/HOLE
•
WIDTH BETWEEN FLATS: 0.3125 INCHES NOMINAL IN
•
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.60 INCHES MINIMUM IN
HEAD HEIGHT0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
FASTENER LENGTH1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEDOUBLE HEXAGON W/HOLE
WIDTH BETWEEN FLATS0.3125 INCHES NOMINAL IN
THREAD CLASS3A A
MATERIALNICKEL ALLOY OVERALL
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 AS3237-28?
AS3237-28 is a BOLT,MACHINE.
What is the NSN for AS3237-28?
AS3237-28 is cataloged in the U.S. Government catalog under NSN 5306-01-666-0935. This indicates validated use in U.S. government and defense supply chains.
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