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MS21297-08024 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MS21297-08024: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL COMP H11 OVERALL, head_style: SPLINE EXTENDED WASHER, grip_length: 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN, head_height: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-059-1088, 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
MS21297-08024
NSN: 5306-01-059-1088
FSC: 5306 — Bolts
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP H11 OVERALL
head_styleSPLINE EXTENDED WASHER
grip_length1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN
head_height0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN
thread_length0.828 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length2.338 INCHES MINIMUM AND 2.368 INCHES MAXIMUM IN
hardness_rating46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
NSN5306-01-059-1088
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS21297-08024 · 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
•
SURFACE FINISH: 32.0 MICROINCHES GRIP
•
EXTENDED WASHER THICKNESS: 0.062 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.338 INCHES MINIMUM AND 2.368 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.922 INCHES MINIMUM AND 0.932 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.828 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN
•
HARDNESS RATING: 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
EXTENDED WASHER THICKNESS0.062 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
HEAD HEIGHT0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN
FASTENER LENGTH2.338 INCHES MINIMUM AND 2.368 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.922 INCHES MINIMUM AND 0.932 INCHES MAXIMUM IN
THREAD LENGTH0.828 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLESPLINE EXTENDED WASHER
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS21297-08024?
MS21297-08024 is a BOLT,CLOSE TOLERANCE.
What is the NSN for MS21297-08024?
MS21297-08024 is cataloged in the U.S. Government catalog under NSN 5306-01-059-1088. 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.