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3M1231-2 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3M1231-2: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_style: HEXAGON, grip_length: 1.580 INCHES NOMINAL IN, head_height: 0.080 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.115 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-433-4093, 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
3M1231-2
NSN: 5305-01-433-4093
FSC: 5305 — Screws
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
head_styleHEXAGON
grip_length1.580 INCHES NOMINAL IN
head_height0.080 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.115 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
thread_length0.830 INCHES NOMINAL IN
fastener_length2.400 INCHES MINIMUM AND 2.420 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_between_flats0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
internal_drive_styleW/O INTERNAL DRIVE
nominal_thread_diameter0.138 INCHES IN
NSN5305-01-433-4093
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3M1231-2 · 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: 0.080 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.400 INCHES MINIMUM AND 2.420 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.830 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
GRIP LENGTH: 1.580 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.080 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
FASTENER LENGTH2.400 INCHES MINIMUM AND 2.420 INCHES MAXIMUM IN
THREAD LENGTH0.830 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.580 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
GRIP DIAMETER0.115 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
MINIMUM TENSILE STRENGTH16000 POUNDS PER SQUARE INCH LBS
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 3M1231-2?
3M1231-2 is a SCREW,CLOSE TOLERANCE.
What is the NSN for 3M1231-2?
3M1231-2 is cataloged in the U.S. Government catalog under NSN 5305-01-433-4093. This indicates validated use in U.S. government and defense supply chains.
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