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311974 — BRAKE,SINGLE DISK

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

311974: BRAKE,SINGLE DISK.

The BRAKE,SINGLE DISK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: FILLISTER, head_height: 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN, thread_length: 0.063 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-638-2845, 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
311974
NSN: 5305-00-638-2845
NIINs: 006382845, 012519207
FSC: 5305 — Screws
CAGE: 21900 — FEDERAL DIV OF VICTOREEN INSTRUMENT CO INC (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleFILLISTER
head_height0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
thread_length0.063 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
fastener_length0.088 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.099 INCHES IN
first_diameter_from_head0.066 INCHES MINIMUM AND 0.076 INCHES MAXIMUM IN
NSN5305-00-638-2845
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 311974 · 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
•
HEAD HEIGHT: 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.088 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.063 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
FIRST DIAMETER FROM HEAD: 0.066 INCHES MINIMUM AND 0.076 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.099 INCHES IN
•
HEAD STYLE: FILLISTER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
FASTENER LENGTH0.088 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
THREAD LENGTH0.063 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
FIRST DIAMETER FROM HEAD0.066 INCHES MINIMUM AND 0.076 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.099 INCHES IN
HEAD STYLEFILLISTER
THREAD DIRECTIONRIGHT-HAND
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
SUBSTITUTES & CROSS-REFERENCES 2
711499Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
611499Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 311974?
311974 is a BRAKE,SINGLE DISK.
What parts can replace 311974?
There are 2 known substitutes for 311974: 711499, 611499. Substitute compatibility should be verified for your specific system.
What is the NSN for 311974?
311974 is cataloged in the U.S. Government catalog under NSN 5305-00-638-2845. This indicates validated use in U.S. government and defense supply chains.
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