Model: A25A978-101-39

Thumbscrew
Description:

3a thread class, right-hand , 0.750 inches thread length, 2.620 inches fastener length, knurled no. 1 head style, 0.880 inches head diameter.

Special Features:

Shoulder tapered 5 degrees by 0.940 in. Lg

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.750 inches
Fastener Length
2.620 inches
Head Style
Knurled no. 1
Head Diameter
0.880 inches
Head Height
0.380 inches
Shoulder Diameter
0.499 inches first shoulder and 0.500 inches first shoulder
Shoulder Length
1.870 inches first shoulder
Point Style
Pointless
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Shoulder Shape
Round first shoulder
Material
Steel comp 303
Material Specification
Qq-s-764 cond a federal specification single material response
Thread Series Designator
Unf
NSN
5305-00-005-1545
Part Number
A25A978-101-39
Description
Thumbscrew
CAGE
99696

An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use screw (as modified) or bolt (as modified).

Part A25A978-101-39 NSN 5305-00-005-1545

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06673
FIIG:
A003B0
Concept No.:
App. Key:
SR
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:
--
WCC:
573
TCC:
Z
SHC:
Z
ACC:
Equipment for Aircraft

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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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