Model: T28745

Ribbed Shoulder Bolt

Special Features:

Unthreaded portion below head 0.180 inch long. Shank below second shoulder 0.340 inch min, 0.350 inch max dia; 0.480 inch long

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.940 inches
Fastener Length
2.560 inches
Head Diameter
0.240 inches
Shoulder Diameter
0.384 inches and 0.389 inches first shoulder
Shoulder Diameter
0.381 inches and 0.382 inches
Shoulder Length
0.160 inches and 0.240 inches first shoulder
Shoulder Length
0.760 inches second shoulder
Thread Diameter
0.375 inches
Thready Qty Per Inch (tpi)
24
Min. Tensile Strength (psi)
12700 pounds per square inch
Hardness Rating
32.0 rockwell c and 38.0 rockwell c
Shoulder Shape
Ribbed first shoulder
Shoulder Shape
Round second shoulder
Material
Steel comp 8637 or steel comp 8640
Material Specification
Sae assn standard all material responses
Thread Series Designator
Unf
NSN
5306-01-219-7163
Part Number
T28745
Description
Bolt,ribbed Shoulder
CAGE
75160

An externally threaded fastener whose threaded portion is of one nominal diameter. It has a series of longitudinal ribs, splines or serrations on all or a part of the shoulder. The minor diameter of the ribs must be greater than the major diameter of the threads. See also bolt, ribbed neck.

Part T28745 NSN 5306-01-219-7163

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16014
FIIG:
A003B0
Concept No.:
App. Key:
BU
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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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

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