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Cross Reference

These part numbers have the same form, fit, and function as 40s51a040-3a
Item Number Cage
40S51A040-3A 71286
40551A040-3A 71286

Technical Definition

Stud Assembly, Turnlock Fastener, also referenced with federal logistics item name code 18484 - A stud, turnlock fastener over which may be assembled an eyelet, turnlock fastener. stud(s) without cam slots or cam lead threads are provided with a crosspin or eared nut for locking with the mating receptacle, turnlock fastener. may be spring loaded. for like items having a threaded fastener, see screw assembly, panel or screw, panel fastener.

Q & A

Part number 40S51A0403A
What are the historical prices for part number 40S51A040-3A?
No pre-dated pricing for this NSN could be found.
Does this part number 40S51A040-3A have a shelf life?
No. There is no shelf life applicable for this part.
Does this part number 40S51A040-3A require Demilitarization?
Non-usml/non-ccli - no demil or dod tsc required. department of commerce may impose licensing requirements to certain destinations. (note 9).
Is part number 40S51A040-3A ITAR controlled?
No. This item is not ITAR Controlled.
What is the NSN for part number 40S51A040-3A?
Who are the manufacturers of 40S51A040-3A and NSN 5325-00-611-6727?
  • Alcoa Global Fasteners, Inc. (CAGE 71286)


Description: Turnlock Fastener Stud Assembly
Part Number 40S51A040-3A 40S51A040 3A


steel comp 302 washer

ABMZ Diameter
From 0.377" and 0.384"
ADQB Securing Device Type
AGRD Turnlock Stud Head Style
Stud head
AGRE Stud Assembly Style
Stud assembly
AGRF Distance From Engaging Member To Largest Bearing Surface Of Head
From 0.575" and 0.585"
AGRH Eyelet Outside Diameter
From 0.365" and 0.373"
AGRK Eyelet Length
From 0.145" and 0.156"
AGSM Material Accommodated Thickness
From 0.443" and 0.453"
AKCV Drive Type
CQYY Stud Head Height
0.092 inches
MATT Material
Steel comp 302 washer
MATT Material
Steel pin
MDCL Material Spec
Astm a331 assn std single material response grommet
MDCL Material Spec
Qq-s-766 fed spec single material response washer
SFTT Surface Treatment
Cadmium stud and chromate stud
SFTT Surface Treatment
Passivate washer
STDC Surface Treatment Spec
Qq-p-35 fed spec single treatment response grommet
STDC Surface Treatment Spec
Qq-p-416,ty 2,cl 2 fed spec single treatment response stud
National Stock Number (NSN): 5325-00-611-6727