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Technical Data Sheet
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123CM11288-1 — Technical Data Sheet

✓ 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 STUD,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340, thread_class: 3A STUD THREAD A, thread_length: 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM NUT THREAD IN, overall_length: 2.640 INCHES NOMINAL IN, shoulder_length: 0.250 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-075-3758, 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
123CM11288-1
NSN: 5307-00-075-3758
FSC: 5307
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP E4340
thread_class3A STUD THREAD A
thread_length0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM NUT THREAD IN
overall_length2.640 INCHES NOMINAL IN
shoulder_length0.250 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.312 INCHES STUD THREAD IN
distance_across_flats0.750 INCHES NOMINAL IN
second_shoulder_length0.062 INCHES NOMINAL IN
cotter_pin_hole_diameter0.077 INCHES MINIMUM AND 0.082 INCHES MAXIMUM FIRST HOLE IN
second_shoulder_diameter0.875 INCHES NOMINAL IN
thread_quantity_per_inch24 STUD THREAD
NSN5307-00-075-3758
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 123CM11288-1 · 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 CLASS: 3A STUD THREAD A
•
THREAD LENGTH: 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM STUD THREAD IN
•
THREAD QUANTITY PER INCH: 28 NUT THREAD
•
SECOND SHOULDER LENGTH: 0.062 INCHES NOMINAL IN
•
DISTANCE FROM COTTER PIN HOLE CENTERLINE TO NUT END: 0.116 INCHES NOMINAL FIRST HOLE IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: GSS8050,FSCM 26512 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A STUD THREAD A
THREAD LENGTH0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM STUD THREAD IN
THREAD QUANTITY PER INCH28 NUT THREAD
SECOND SHOULDER LENGTH0.062 INCHES NOMINAL IN
DISTANCE FROM COTTER PIN HOLE CENTERLINE TO NUT END0.116 INCHES NOMINAL FIRST HOLE IN
THREAD QUANTITY PER INCH24 STUD THREAD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONGSS8050,FSCM 26512 MFR REF SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH2.640 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNF STUD THREAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
183170-1Same_fsc
same_fsc cross-reference
same_fsc
571217-1Same_fsc
same_fsc cross-reference
same_fsc
472P011C035-7Same_fsc
same_fsc cross-reference
same_fsc
J684P08Same_fsc
same_fsc cross-reference
same_fsc
RZA12136-683P07Same_fsc
same_fsc cross-reference
same_fsc
J6B83P07Same_fsc
same_fsc cross-reference
same_fsc
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 123CM11288-1?
123CM11288-1 is a STUD,SHOULDERED.
What parts can replace 123CM11288-1?
There are 7 known substitutes for 123CM11288-1: 183170-1, 571217-1, 472P011C035-7 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 123CM11288-1?
123CM11288-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-075-3758. This indicates validated use in U.S. government and defense supply chains.
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Last verified: September 2026