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BACB30MR9R21 — BOLT,SHEAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

BACB30MR9R21: BOLT,SHEAR.

The BOLT,SHEAR is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R56400 OVERALL, head_style: DOUBLE HEXAGON W/HOLE, grip_length: 1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM IN, head_height: 0.470 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.5610 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-337-6965, 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
BACB30MR9R21
NSN: 5306-01-337-6965
FSC: 5306 — Bolts
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialTITANIUM ALLOY UNS R56400 OVERALL
head_styleDOUBLE HEXAGON W/HOLE
grip_length1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM IN
head_height0.470 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.5610 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN
thread_length0.840 INCHES NOMINAL IN
surface_finish32.0 MICROINCHES THREADS
fastener_length2.137 INCHES MINIMUM AND 2.167 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
features_providedCETYL ALCOHOL LUBRICANT
surface_treatmentPHOSPHATE OVERALL
NSN5306-01-337-6965
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BACB30MR9R21 · 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 THREADS
•
EXTENDED WASHER THICKNESS: 0.128 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.470 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.137 INCHES MINIMUM AND 2.167 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: BAC 5861 CAGEC 81205 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.928 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
EXTENDED WASHER THICKNESS0.128 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
HEAD HEIGHT0.470 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
FASTENER LENGTH2.137 INCHES MINIMUM AND 2.167 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONBAC 5861 CAGEC 81205 MFR REF SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.928 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
THREAD LENGTH0.840 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS4967 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4928 ASSN STD SINGLE MATERIAL RESPONSE 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BACB30MR9R21?
BACB30MR9R21 is a BOLT,SHEAR.
What is the NSN for BACB30MR9R21?
BACB30MR9R21 is cataloged in the U.S. Government catalog under NSN 5306-01-337-6965. 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.