Product Details | LOCKED IN STUD

5307-01-398-0340 A headless fastener externally threaded on both ends with each threaded portion of one but not necessarily the same nominal diameter. It is designed to be locked in place by either a RING, LOCK, SERRATED or a RING, LOCK, KEYED.

Part Alternates: MS51992C80528, MS51992C805-28, MILS45909, MIL-S-45909, 5307-01-398-0340, 01-398-0340, 5307013980340, 013980340

Hardware and Abrasives | Studs

Supply Group (FSG) NSN Assign. NIIN
53 23 OCT 1994 01-398-0340

Drawings & Photos | NSN 5307-01-398-0340


Demand History | NSN 5307-01-398-0340

Part Number Request Date QTY Origin
MS51992C80528 2026-02-43 300 US
5307-01-398-0340 2025-03-80 8 us
MS51992C80528 2024-10-288 8 United States
5307-01-398-0340 2024-01-19 8 US
MS51992C80528 2022-08-235 7 United States
5307-01-398-0340 2008-09-266 1 us

Cross Reference | NSN 5307-01-398-0340

Part Number Cage Code Manufacturer
MIL-S-45909 81349 MILITARY SPECIFICATIONS PROMULGATED BY MILITARY
MS51992C805-28 96906 MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS

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Technical Data | NSN 5307-01-398-0340

Characteristic Specifications
MATERIAL IRON ALLOY 660
MATERIAL DOCUMENT AND CLASSIFICATION AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5734 ASSN STD SINGLE MATERIAL RESPONSE
SURFACE TREATMENT PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATOR 35 LOCKED IN
DISTANCE FROM SERRATED PORTION TO NUT END 1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM
DISTANCE FROM SERRATED PORTION TO STUD END 1.056 INCHES MINIMUM AND 1.096 INCHES MAXIMUM
DISTANCE FROM SERRATED PORTION TO END OF STUD THREAD 0.180 INCHES MINIMUM AND 0.220 INCHES MAXIMUM
OVERALL LENGTH 1.950 INCHES NOMINAL
THREAD SERIES DESIGNATOR UNJF NUT THREAD A UNJF NUT THREAD B
NOMINAL THREAD SIZE 0.375 INCHES NUT THREAD A 0.500 INCHES NUT THREAD B
THREAD CLASS 3A NUT THREAD A 3A NUT THREAD B
THREAD QUANTITY PER INCH 24 NUT THREAD A 13 NUT THREAD B
THREAD DIRECTION RIGHT-HAND NUT THREAD A RIGHT-HAND NUT THREAD B
THREAD LENGTH 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM NUT THREAD A 0.856 INCHES MINIMUM AND 0.896 INCHES MAXIMUM NUT THREAD B
LOCKING FEATURE RING, LOCK SERRATED
III HARDNESS RATING 277.0 BRINELL HULTGREN NOMINAL
III SURFACE FINISH 32.0 MICROINCHES NUT THD 63.0 MICROINCHES SHANK
III SERRATION QUANTITY 24
III SERRATION INCLUDED ANGLE 102.0 DEGREES NOMINAL
MANUFACTURERS CODE 81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE MIL-S-45909
MANUFACTURERS CODE 96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE MS51992C805-28

Restrictions/Controls & Freight Information | NSN 5307-01-398-0340

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
No Freight Information

Management | NSN 5307-01-398-0340

Category Code Description
Materiel Management Aggregation CodeBATB:C-17 PROGRAM
Price ValidationN The current standard price in Catalog Management Data (CMD) has not analyzed or coded for LP/LM.
  • The price has not been analyzed or reviewed for accuracy.
  • ZOP or Standard price challenges are permissible, but must be supported with adequate justification. However, if coded for Local Purchase (LP) or Fabrication/Manufacture as indicated with an (LM) Acquisition Advice Code of ?L? or?F?,the case must be evaluated locally where purchased or fabricated.
Budget CodeS 1557X3010:Aircraft Replenishment Spares
Source of SupplyF77Boeing Military Transportation Aircraft
Los Angeles, CA 90307-3044
AgencyDFDepartment of the Air Force
Service OrganizationFU.S. Air Force
ReparabilityNStock Fund (except Munitions)
Acquisition Advice CodesJNOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative