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Technical Data Sheet
PartsTable / COMPONENT / BACS12Y6C3
BACS12Y6C3 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN NO. 2, head_height: 0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 0.188 INCHES NOMINAL IN, screw_material: STEEL CORROSION RESISTING.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-543-2771, 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
BACS12Y6C3
NSN: 5305-00-543-2771
FSC: 5305
CAGE: 08903 — THE BOEING COMPANY (USA)
SPECIFICATIONS
head_stylePAN NO. 2
head_height0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.188 INCHES NOMINAL IN
screw_materialSTEEL CORROSION RESISTING
fastener_length0.188 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentPASSIVATE
thread_quantity_per_inch32
NSN5305-00-543-2771
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BACS12Y6C3 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
FASTENER LENGTH: 0.188 INCHES NOMINAL IN
•
HEAD DIAMETER: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
•
SCREW MATERIAL: STEEL CORROSION RESISTING
•
HEAD STYLE: PAN NO. 2
•
THREAD QUANTITY PER INCH: 32
•
HEAD HEIGHT: 0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 9S STYLE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH0.188 INCHES NOMINAL IN
HEAD DIAMETER0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
SCREW MATERIALSTEEL CORROSION RESISTING
HEAD STYLEPAN NO. 2
THREAD QUANTITY PER INCH32
HEAD HEIGHT0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 9S STYLE
NOMINAL THREAD DIAMETER0.138 INCHES IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
MS515957-25Interchangeable
interchangeable cross-reference
interchangeable
112-0782-025Interchangeable
interchangeable cross-reference
interchangeable
2035480-218Interchangeable
interchangeable cross-reference
interchangeable
FFS92TYPE1STYLE9SInterchangeable
Same NIIN cross-reference
interchangeable
12Z1132-22Interchangeable
Same NIIN cross-reference
interchangeable
MS35233-25Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BACS12Y6C3?
BACS12Y6C3 is a SCREW,MACHINE.
What parts can replace BACS12Y6C3?
There are 6 known substitutes for BACS12Y6C3: MS515957-25, 112-0782-025, 2035480-218 and 3 more. Substitute compatibility should be verified for your specific system.
Is BACS12Y6C3 still available?
BACS12Y6C3 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026