Model: 77191

Thumbscrew

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.840 inches
Fastener Length
1.560 inches
Head Style
Knurled no. 2
Head Diameter
0.620 inches
Head Height
0.380 inches
Shoulder Diameter
0.500 inches first shoulder
Shoulder Length
0.030 inches first shoulder and 0.040 inches first shoulder
Point Length
0.720 inches
Point Diameter
Between 0.187 inches and 0.195 inches
Point Style
Ball
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
20
Shoulder Shape
Round first shoulder
Material
Copper alloy
Material Specification
Astm b16 half hard assn standard single material response
Surface Treatment
Paint
Surface Treatment Specification
-1l-t-704, type a military specification single treatment response
Thread Series Designator
Unc
NSN
5305-00-590-7817
Part Number
77191
Description
Thumbscrew
CAGE
93084

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 77191 NSN 5305-00-590-7817

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
096630
UFC:
50590
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7415338550
  • SITC: 69433
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Other copper screws (not for wood) bolts and nuts

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