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120-279N — STUD,AIRCRAFT,MATER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

120-279N: STUD,AIRCRAFT,MATER.

The STUD,AIRCRAFT,MATER is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 0.3160 INCHES MINIMUM AND 0.3170 INCHES MAXIMUM IN, overall_length: 1.280 INCHES NOMINAL IN, overall_diameter: 0.2930 INCHES MINIMUM AND 0.2940 INCHES MAXIMUM IN, special_features: MATERIAL:ALLOY STEEL - 4340 PER AMS6414 OR 8740 PER AMS6322 OR AMS 6325 OR AMS 6327, surface_treatment: OXIDE. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-552-9061, 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
120-279N
NSN: 5307-01-552-9061
FSC: 5307 — Studs
CAGE: 92215 — HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS (USA)
SPECIFICATIONS
materialSTEEL
overall_height0.3160 INCHES MINIMUM AND 0.3170 INCHES MAXIMUM IN
overall_length1.280 INCHES NOMINAL IN
overall_diameter0.2930 INCHES MINIMUM AND 0.2940 INCHES MAXIMUM IN
special_featuresMATERIAL:ALLOY STEEL - 4340 PER AMS6414 OR 8740 PER AMS6322 OR AMS 6325 OR AMS 6327
surface_treatmentOXIDE
special_test_featuresLEFT SIDE: 0.3125-18UNJS PER AS8879 CHAMFER END, 0.739" MIN,RIGHT SIDE: 0.3125-24UNJF-3A 0.420" MIN,MIDDLE DIAMETER 0.279" TO 0.289" A
supplementary_featuresHEAT TREATMENT: 180-200 KSI ULTIMATE TENSILE STRENGTH PER AMS2759, FINISH: CHEMICAL BLACK OXIDE PER MIL-DTL-13924
thread_size_and_series/type_designator0.3125-24 UNIFIED NATIONAL JOINT FINE (UNJF)
general_characteristics_item_descriptionPITCH DIAMETER:0.2930" TO 0.2940", PD LEAD THREAD: 0.2864" TO 0.2884",MINOR DIAMETER: 0.2616" TO 0.2664"
part_name_assigned_by_controlling_agencySTUD,STRAIGHT,VENTED,.3125-18 X .3125.24,180 KSI,SPECIAL
NSN5307-01-552-9061
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 120-279N · 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
•
OVERALL DIAMETER: 0.2930 INCHES MINIMUM AND 0.2940 INCHES MAXIMUM IN
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: PITCH DIAMETER:0.2930" TO 0.2940", PD LEAD THREAD: 0.2864" TO 0.2884",MINOR DIAMETER: 0.2616" TO 0.2664"
•
SPECIAL TEST FEATURES: LEFT SIDE: 0.3125-18UNJS PER AS8879 CHAMFER END, 0.739" MIN,RIGHT SIDE: 0.3125-24UNJF-3A 0.420" MIN,MIDDLE DIAMETER 0.279" TO 0.289" A
•
SUPPLEMENTARY FEATURES: HEAT TREATMENT: 180-200 KSI ULTIMATE TENSILE STRENGTH PER AMS2759, FINISH: CHEMICAL BLACK OXIDE PER MIL-DTL-13924
•
SURFACE TREATMENT: OXIDE
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.3160 INCHES MINIMUM AND 0.3170 INCHES MAXIMUM IN
OVERALL DIAMETER0.2930 INCHES MINIMUM AND 0.2940 INCHES MAXIMUM IN
GENERAL CHARACTERISTICS ITEM DESCRIPTIONPITCH DIAMETER:0.2930" TO 0.2940", PD LEAD THREAD: 0.2864" TO 0.2884",MINOR DIAMETER: 0.2616" TO 0.2664"
SPECIAL TEST FEATURESLEFT SIDE: 0.3125-18UNJS PER AS8879 CHAMFER END, 0.739" MIN,RIGHT SIDE: 0.3125-24UNJF-3A 0.420" MIN,MIDDLE DIAMETER 0.279" TO 0.289" A
SUPPLEMENTARY FEATURESHEAT TREATMENT: 180-200 KSI ULTIMATE TENSILE STRENGTH PER AMS2759, FINISH: CHEMICAL BLACK OXIDE PER MIL-DTL-13924
OVERALL LENGTH1.280 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL:ALLOY STEEL - 4340 PER AMS6414 OR 8740 PER AMS6322 OR AMS 6325 OR AMS 6327
SURFACE TREATMENTOXIDE
PART NAME ASSIGNED BY CONTROLLING AGENCYSTUD,STRAIGHT,VENTED,.3125-18 X .3125.24,180 KSI,SPECIAL
MATERIALSTEEL
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 120-279N?
120-279N is a STUD,AIRCRAFT,MATER.
What is the NSN for 120-279N?
120-279N is cataloged in the U.S. Government catalog under NSN 5307-01-552-9061. 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.