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11664570 — BOLT,U

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

11664570: BOLT,U.

The BOLT,U is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1340 OR STEEL COMP 4042 OR STEEL COMP 4140 OR STEEL COMP 5135 OVERALL, thread_class: 3A A, thread_length: 2.500 INCHES NOMINAL IN, special_features: 16.270 IN. LENTH FROM BEND TO END OF LONGEST SHANK; BEND GHAS A 2.440 IN.

LENGTH WITH A 2.000 IN. RADIUS IN, style_designator: SQUARE BEND, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-445-7240, 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
11664570
NSN: 5306-00-445-7240
FSC: 5306 — Bolts
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1340 OR STEEL COMP 4042 OR STEEL COMP 4140 OR STEEL COMP 5135 OVERALL
thread_class3A A
thread_length2.500 INCHES NOMINAL IN
special_features16.270 IN. LENTH FROM BEND TO END OF LONGEST SHANK; BEND GHAS A 2.440 IN. LENGTH WITH A 2.000 IN. RADIUS IN
style_designatorSQUARE BEND
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE OVERALL
nominal_thread_diameter0.875 INCHES IN
thread_quantity_per_inch14
thread_series_designatorUNF
inside_distance_between_shanks3.063 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-624 FED SPEC ALL MATERIAL RESPONSES OR SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
NSN5306-00-445-7240
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 11664570 · 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
•
INSIDE DISTANCE BETWEEN SHANKS: 3.063 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-P-16232,TYPE Z,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 2.500 INCHES NOMINAL IN
•
DISTANCE FROM INSIDE CENTER OF BEND TO BOLT END: 15.060 INCHES MINIMUM AND 15.120 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SQUARE BEND
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OR SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.875 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
INSIDE DISTANCE BETWEEN SHANKS3.063 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-P-16232,TYPE Z,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH2.500 INCHES NOMINAL IN
DISTANCE FROM INSIDE CENTER OF BEND TO BOLT END15.060 INCHES MINIMUM AND 15.120 INCHES MAXIMUM IN
STYLE DESIGNATORSQUARE BEND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC ALL MATERIAL RESPONSES OR SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.875 INCHES IN
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURES16.270 IN. LENTH FROM BEND TO END OF LONGEST SHANK; BEND GHAS A 2.440 IN. LENGTH WITH A 2.000 IN. RADIUS IN
SURFACE TREATMENTPHOSPHATE 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 1
5306004457240Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 11664570?
11664570 is a BOLT,U.
What parts can replace 11664570?
There is 1 known substitute for 11664570: 5306004457240. Substitute compatibility should be verified for your specific system.
What is the NSN for 11664570?
11664570 is cataloged in the U.S. Government catalog under NSN 5306-00-445-7240. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.