Model: B18.2.1 TABLE 4 SIZE 1/4

Hexagon Head Cap Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.406 inches and 0.438 inches
Fastener Length
Between 0.406 inches and 0.438 inches
Head Style
Hexagon
Head Height
Between 0.150 inches and 0.163 inches
Width Between Flats
Between 0.428 inches and 0.437 inches
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
120000 pounds per square inch
Hardness Rating
25.0 rockwell c and 34.0 rockwell c
Material
Steel
Material Specification
Sae j429, grade 5 assn standard single material response or astm a449, grade 5, uns k04200 assn standard single material response
Surface Treatment
Cadmium and cadmium or chromate zinc
Surface Treatment Specification
Qq-p-416, type 2, class 3 federal specification 1st treatment response or qq-z-325, type 2, class 3 federal specification 2nd treatment response
Thread Series Designator
Unf
Specification Data
81348-ff-s-85 government specification and 96906-ms35292/cancelled/ government standard and 24617-123308 manufacturers standard and 80204-ansi b18.2.1 professional/industrial association standard
Nondefinitive Specification/std Data
2 type and 10p style and 5 grade and 1/4in. Size
Departure From Cited Document
As modified by cadmium or zinc surf. Treat
NSN
5305-00-543-5056
Part Number
B18.2.1 TABLE 4 SIZE 1/4
Description
Screw,cap,hexagon Head
CAGE
80204

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. the threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. the thread length being the controlled dimension, the grip length is not specified. a locking feature may be incorporated in the design of the head or threads. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. excludes bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

Part B18.2.1 TABLE 4 SIZE 1/4 NSN 5305-00-543-5056

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
18257
FIIG:
A003B0
Concept No.:
App. Key:
SB
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

Pricing & Availability Check

Submit this form for stock availability and pricing.
Part Number:
Quantity:
Email Address:
Phone Number:
Your Name:
Company:



Privacy Policy    Terms & Conditions

How to Order  

Ordering from buyaircraftparts.com

If you would like to order this hexagon head cap screw (NSN 5305-00-543-5056) please submit the pricing and availability form above to receive an up to date quote by email. If you agree to the pricing and terms you can e-sign your order online!

We are pleased to have the opportunity to serve you.

Have a Question

Hours: 08:00-18:00 Eastern Standard Time
Phone: +1 470-231-0824
Email: Contact Form »
Schedule B and Export
  • Schedule B: 7318152000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment

Highest Rated Parts
Recently Purchased Parts
Hot Parts