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CA21160-4-4HS — BOLT,INTERNAL WRENCHING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

CA21160-4-4HS: BOLT,INTERNAL WRENCHING.

The BOLT,INTERNAL WRENCHING is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 FASTENER, head_style: OVAL COUNTERSUNK, thread_class: 3A A, head_diameter: 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, thread_length: 0.672 INCHES MINIMUM AND 0.831 INCHES MAXIMUM IN, fastener_length: 1.102 INCHES MINIMUM AND 1.122 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-283-2420, 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
CA21160-4-4HS
NSN: 5306-01-283-2420
FSC: 5306 — Bolts
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)
SPECIFICATIONS
materialIRON ALLOY 660 FASTENER
head_styleOVAL COUNTERSUNK
thread_class3A A
head_diameter0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
thread_length0.672 INCHES MINIMUM AND 0.831 INCHES MAXIMUM IN
fastener_length1.102 INCHES MINIMUM AND 1.122 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle100.0 DEGREES NOMINAL
surface_treatmentPASSIVATE FASTENER
width_across_flats0.1409 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
end_item_identificationF-16, EAGLE F-15, LANTIRN
NSN5306-01-283-2420
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: CA21160-4-4HS · 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
•
WIDTH ACROSS FLATS: 0.1409 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.102 INCHES MINIMUM AND 1.122 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
•
THREAD LENGTH: 0.672 INCHES MINIMUM AND 0.831 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: OVAL COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.1409 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM IN
FASTENER LENGTH1.102 INCHES MINIMUM AND 1.122 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
THREAD LENGTH0.672 INCHES MINIMUM AND 0.831 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5732 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEOVAL COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURES2 SLOTS ON THREAD END 0.125-0.140 IN. DIA.; 0.620 IN. LG. FOR LOCKWIRE; 2 LONG SLOTS ON THREADS AND SHANK 0.045-0.055 IN. DIA.; LOCKWIRE 17-7PH CRES PER AMS 5673 HEAT TREATED TO CONDITION CH900 PER MIL-H-6875,PASSIVATED PER QQ-P-35; THREADS 2 LEAD IN
SURFACE TREATMENTPASSIVATE FASTENER
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
717801664-001Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CA21160-4-4HS?
CA21160-4-4HS is a BOLT,INTERNAL WRENCHING.
What parts can replace CA21160-4-4HS?
There is 1 known substitute for CA21160-4-4HS: 717801664-001. Substitute compatibility should be verified for your specific system.
What is the NSN for CA21160-4-4HS?
CA21160-4-4HS is cataloged in the U.S. Government catalog under NSN 5306-01-283-2420. 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.