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120-279M — STUD,PLAIN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

120-279M: STUD,PLAIN.

The STUD,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4340 OR STEEL COMP 8740, surface_treatment: OXIDE OVERALL, nominal_thread_size: 0.3125 INCHES NUT THREAD B IN, special_test_features: PITCH DIAMETER: OVERSIZE .2910"MAX, .2900"MIN,PD LEAD THREAD: .2854"MAX, .2834"MIN,MINOR DIAMETER: .2634"MAX, .2586"MIN, thread_quantity_per_inch: 24 NUT THREAD B, part_name_assigned_by_controlling_agency: STUD,STRAIGHT,VENTED, .3125-18 X .3125-24,180 KSI, SPECIAL. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-552-9056, 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
120-279M
NSN: 5307-01-552-9056
FSC: 5307 — Studs
CAGE: 92215 — HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS (USA)
SPECIFICATIONS
materialSTEEL COMP 4340 OR STEEL COMP 8740
special_featuresMATERIAL: ALLOY STEEL 4340 PER AMS6414 OR 8740 PER AMS6322 OR AMS6325 OR AMS6327, HEAT TREATMENT 180-200 KSI ULTIMATE TENSILE STRENGTH PER AMS2759, FINISH: CHEMICAL BLACK OXIDE PER MIL-DTL-13924
surface_treatmentOXIDE OVERALL
nominal_thread_size0.3125 INCHES NUT THREAD B IN
special_test_featuresPITCH DIAMETER: OVERSIZE .2910"MAX, .2900"MIN,PD LEAD THREAD: .2854"MAX, .2834"MIN,MINOR DIAMETER: .2634"MAX, .2586"MIN
thread_quantity_per_inch24 NUT THREAD B
material_document_and_classificationAMS6414 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6325 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6327 ASSN STD SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencySTUD,STRAIGHT,VENTED, .3125-18 X .3125-24,180 KSI, SPECIAL
surface_treatment_document_and_classification96906-MIL-DTL-13924 MIL STD SINGLE TREATMENT RESPONSE OVERALL
NSN5307-01-552-9056
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 120-279M · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: 96906-MIL-DTL-13924 MIL STD SINGLE TREATMENT RESPONSE OVERALL
•
SPECIAL TEST FEATURES: PITCH DIAMETER: OVERSIZE .2910"MAX, .2900"MIN,PD LEAD THREAD: .2854"MAX, .2834"MIN,MINOR DIAMETER: .2634"MAX, .2586"MIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS6414 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6325 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6327 ASSN STD SINGLE MATERIAL RESPONSE
•
NOMINAL THREAD SIZE: 0.3125 INCHES NUT THREAD A IN
•
SURFACE TREATMENT: OXIDE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION96906-MIL-DTL-13924 MIL STD SINGLE TREATMENT RESPONSE OVERALL
SPECIAL TEST FEATURESPITCH DIAMETER: OVERSIZE .2910"MAX, .2900"MIN,PD LEAD THREAD: .2854"MAX, .2834"MIN,MINOR DIAMETER: .2634"MAX, .2586"MIN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS6414 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6325 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6327 ASSN STD SINGLE MATERIAL RESPONSE
NOMINAL THREAD SIZE0.3125 INCHES NUT THREAD A IN
NOMINAL THREAD SIZE0.3125 INCHES NUT THREAD B IN
SPECIAL FEATURESMATERIAL: ALLOY STEEL 4340 PER AMS6414 OR 8740 PER AMS6322 OR AMS6325 OR AMS6327, HEAT TREATMENT 180-200 KSI ULTIMATE TENSILE STRENGTH PER AMS2759, FINISH: CHEMICAL BLACK OXIDE PER MIL-DTL-13924
SURFACE TREATMENTOXIDE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYSTUD,STRAIGHT,VENTED, .3125-18 X .3125-24,180 KSI, SPECIAL
THREAD QUANTITY PER INCH18 NUT THREAD A
THREAD QUANTITY PER INCH24 NUT THREAD B
OTHER ITEMS IN FSC 5307 — Studs
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5307-00-000-6436 5307-00-001-1578 5307-00-001-1761 5307-00-001-2366 5307-00-001-4491 5307-00-001-4624 5307-00-001-4625
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 120-279M?
120-279M is a STUD,PLAIN.
What is the NSN for 120-279M?
120-279M is cataloged in the U.S. Government catalog under NSN 5307-01-552-9056. 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.