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BACB30JQ10-21 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

BACB30JQ10-21: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: BEVEL-CONICAL, head_height: 0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 1.040 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN, thread_length: 0.938 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-414-5135, 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
BACB30JQ10-21
NSN: 5305-01-414-5135
FSC: 5305 — Screws
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleBEVEL-CONICAL
head_height0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN
thread_class3A A
head_diameter1.040 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN
thread_length0.938 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length2.250 INCHES NOMINAL IN
shoulder_length1.312 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.6542 INCHES MINIMUM AND 0.6552 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
NSN5305-01-414-5135
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BACB30JQ10-21 · 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: 0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.250 INCHES NOMINAL IN
•
SHOULDER LENGTH: 1.312 INCHES NOMINAL FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TY 2, CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
•
SHOULDER DIAMETER: 0.6542 INCHES MINIMUM AND 0.6552 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.938 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN
HEAD HEIGHT0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN
FASTENER LENGTH2.250 INCHES NOMINAL IN
SHOULDER LENGTH1.312 INCHES NOMINAL FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TY 2, CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
SHOULDER DIAMETER0.6542 INCHES MINIMUM AND 0.6552 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.938 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER0.625 INCHES IN
HEAD STYLEBEVEL-CONICAL
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
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 BACB30JQ10-21?
BACB30JQ10-21 is a SCREW,SHOULDER.
What is the NSN for BACB30JQ10-21?
BACB30JQ10-21 is cataloged in the U.S. Government catalog under NSN 5305-01-414-5135. 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.