973-674-1700Standoffs, Spacers, Captive, Swage, Male Female Standoffs, Jack Screws, Male Male Standoffs, Handles, Thumb Screws, Thumbscrews, Shoulder Screws, Insulating Washers, Electronic Hardware.

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4000 Captive Panel Screws
Externally Relieved Body  FSC- 5305- 120
Available in Hex Head & Round Head

Back To Captive Screws & Retainers Page
*External Thread has a 45 Angle on External Thread.
Slightly Chamfered to Permit Smooth Entry / Fit.

CHOOSE and write down your PART NUMBER
then Go to     Skip Step 1
Part
No.
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C
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G
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Knurl
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Knurl
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Cham-fer
Thread
4001 .313 .313 .083 .047 .078 .120 .177 .078 .078 .375 40.7 128 .022 4 - 40
4002 .313 .313 .083 .047 .078 .120 .239 .078 .078 .437 40.7 128 .022 4 - 40
4003 .313 .313 .083 .047 .078 .120 .301 .078 .078 .500 40.7 128 .022 4 - 40
4004 .313 .313 .083 .047 .078 .120 .363 .078 .078 .562 40.7 128 .022 4 - 40
4005 .313 .313 .083 .047 .078 .120 .425 .078 .078 .625 40.7 128 .022 4 - 40
4005A .313 .313 .083 .047 .078 .120 .489 .078 .078 .687 40.7 128 .022 4 - 40
4005B .313 .313 .083 .047 .078 .120 .552 .078 .078 .750 40.7 128 .022 4 - 40
4005C .313 .313 .083 .047 .078 .120 .614 .078 .078 .812 40.7 128 .022 4 - 40
4005D .313 .313 .083 .047 .078 .120 .677 .078 .078 .875 40.7 128 .022 4 - 40
4005E .313 .313 .083 .047 .078 .120 .739 .078 .078 .937 40.7 128 .022 4 - 40
4005F .313 .313 .083 .047 .078 .120 .802 .078 .078 1.000 40.7 128 .022 4 - 40
4006A .313 .313 .083 .047 .092 .207 .076 .095 .095 .375 40.7 128 .022 6- 32
4006B .313 .313 .083 .047 .092 .207 .138 .095 .095 .437 40.7 128 .022 6- 32
4006 .313 .313 .083 .047 .092 .207 .201 .095 .095 .500 40.7 128 .022 6- 32
4007 .313 .313 .083 .047 .092 .207 .263 .095 .095 .562 40.7 128 .022 6- 32
4008 .313 .313 .083 .047 .092 .207 .326 .095 .095 .625 40.7 128 .022 6- 32
4009 .313 .313 .083 .047 .092 .207 .388 .095 .095 .687 40.7 128 .022 6- 32
4010 .313 .313 .083 .047 .092 .207 .451 .095 .095 .750 40.7 128 .022 6- 32
Part
No.
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C
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G
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H
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M
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L
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4011 .313 .313 .083 .047 .092 .207 .513 .095 .095 .812 40.7 128 .022 6- 32
4012 .313 .313 .083 .047 .092 .207 .576 .095 .095 .875 40.7 128 .022 6- 32
4013 .313 .313 .083 .047 .092 .207 .638 .095 .095 .937 40.7 128 .022 6- 32
4014 .313 .313 .083 .047 .092 .207 .701 .095 .095 1.000 40.7 128 .022 6- 32
4015 .313 .313 .083 .047 .092 .207 .201 .120 .120 .500 40.7 128 .022 8- 32
4016 .313 .313 .083 .047 .092 .207 .263 .120 .120 .562 40.7 128 .022 8- 32
4017 .313 .313 .083 .047 .092 .207 .326 .120 .120 .625 40.7 128 .022 8- 32
4018 .313 .313 .083 .047 .092 .207 .388 .120 .120 .687 40.7 128 .022 8- 32
4019 .313 .313 .083 .047 .092 .207 .451 .120 .120 .750 40.7 128 .022 8- 32
4020 .313 .313 .083 .047 .092 .207 .513 .120 .120 .812 40.7 128 .022 8- 32
4021 .313 .313 .083 .047 .092 .207 .576 .120 .120 .875 40.7 128 .022 8- 32
4022 .313 .313 .083 .047 .092 .207 .638 .120 .120 .937 40.7 128 .022 8- 32
4023 .313 .313 .083 .047 .092 .207 .701 .120 .120 1.000 40.7 128 .022 8- 32
4024 .375 .437 .099 .063 .156 .245 .224 .130 .130 .625 30.6 96 .030 10 - 24
4025 .375 .437 .099 .063 .156 .245 .286 .130 .130 .687 30.6 96 .030 10 - 24
4026 .375 .437 .099 .063 .156 .245 .348 .130 .130 .750 30.6 96 .030 10 - 24
4027 .375 .437 .099 .063 .156 .245 .410 .130 .130 .812 30.6 96 .030 10 - 24
4028 .375 .437 .099 .063 .156 .245 .474 .130 .130 .875 30.6 96 .030 10 - 24
4029 .375 .437 .099 .063 .156 .245 .536 .130 .130 .937 30.6 96 .030 10 - 24
Part
No.
A
Before
Knurl
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±
1/64
C
±
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D
+.005
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E
REF
F
±
.005
G
±
.010
H
±
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M
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-.015
L
REF
Knurl
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Knurl
Pitch
Knurl
Cham-fer
Thread
4030 .375 .437 .099 .063 .156 .245 .600 .130 .130 1.000 30.6 96 .030 10 - 24
4031 .375 .437 .099 .063 .156 .245 .224 .130 .130 .625 30.6 96 .030 10 - 32
4032 .375 .437 .099 .063 .156 .245 .286 .130 .130 .687 30.6 96 .030 10 - 32
4033 .375 .437 .099 .063 .156 .245 .348 .130 .130 .750 30.6 96 .030 10 - 32
4034 .375 .437 .099 .063 .156 .245 .410 .130 .130 .812 30.6 96 .030 10 - 32
4035 .375 .437 .099 .063 .156 .245 .474 .130 .130 .875 30.6 96 .030 10 - 32
4036 .375 .437 .099 .063 .156 .245 .536 .130 .130 .937 30.6 96 .030 10 - 32
4037 .375 .437 .099 .063 .156 .245 .599 .130 .130 1.000 30.6 96 .030 10 - 32
4037A .375 .437 .099 .063 .156 .245 .661 .130 .130 1.062 30.6 96 .030 10 - 32
4037B .375 .437 .099 .063 .156 .245 .724 .130 .130 1.125 30.6 96 .030 10 - 32
4037C .375 .437 .099 .063 .156 .245 .786 .130 .130 1.187 30.6 96 .030 10 - 32
4037D .375 .437 .099 .063 .156 .245 .849 .130 .130 1.250 30.6 96 .030 10 - 32
4037E .375 .437 .099 .063 .156 .245 .912 .130 .130 1.313 30.6 96 .030 10 - 32
4037F .375 .437 .099 .063 .156 .245 .974 .130 .130 1.375 30.6 96 .030 10 - 32
4037G .375 .437 .099 .063 .156 .245 1.099 .130 .130 1.500 30.6 96 .030 10 - 32
4037H .375 .437 .099 .063 .156 .245 1.349 .130 .130 1.750 30.6 96 .030 10 - 32
4037-I .375 .437 .099 .063 .156 .245 1.599 .130 .130 2.000 30.6 96 .030 10 - 32
4038A .500 .562 .099 .078 .187 .308 .130 .175 .175 .625 30.6 96 .038 1/4- 20
4038B .500 .562 .099 .078 .187 .308 .192 .175 .175 .687 30.6 96 .038 1/4- 20
Part
No.
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1/64
C
±
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H
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.005
M
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-.015
L
REF
Knurl
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Knurl
Pitch
Knurl
Cham-fer
Thread
4038 .500 .562 .099 .078 .187 .308 .255 .175 .175 .750 30.6 96 .038 1/4- 20
4039 .500 .562 .099 .078 .187 .308 .317 .175 .175 .812 30.6 96 .038 1/4- 20
4040 .500 .562 .099 .078 .187 .308 .380 .175 .175 .875 30.6 96 .038 1/4- 20
4041 .500 .562 .099 .078 .187 .308 .442 .175 .175 .937 30.6 96 .038 1/4- 20
4042 .500 .562 .099 .078 .187 .308 .505 .175 .175 1.000 30.6 96 .038 1/4- 20
4043 .500 .562 .099 .078 .187 .308 .567 .175 .175 1.062 30.6 96 .038 1/4- 20
4044 .500 .562 .099 .078 .187 .308 .630 .175 .175 1.125 30.6 96 .038 1/4- 20
4045 .500 .562 .099 .078 .187 .308 .692 .175 .175 1.187 30.6 96 .038 1/4- 20
4046 .500 .562 .099 .078 .187 .308 .754 .175 .175 1.250 30.6 96 .038 1/4- 20
4047 .500 .562 .099 .078 .187 .308 .817 .175 .175 1.313 30.6 96 .038 1/4- 20
4048 .500 .562 .099 .078 .187 .308 .880 .175 .175 1.375 30.6 96 .038 1/4- 20
4049 .500 .562 .099 .078 .187 .308 1.005 .175 .175 1.500 30.6 96 .038 1/4- 20
4050 .500 .562 .099 .078 .187 .308 1.255 .175 .175 1.750 30.6 96 .038 1/4- 20
Part
No.
A
Before
Knurl
B
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1/64
C
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.005
D
+.005
-
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REF
F
±
.005
G
±
.010
H
±
.005
M
+.000
-.015
L
REF
Knurl
Teeth
Knurl
Pitch
Knurl
Cham-fer
Thread
4051 .500 .562 .099 .078 .187 .308 1.505 .175 .175 2.000 30.6 96 .038 1/4- 20
4052 .500 .562 .099 .078 .187 .308 .255 .175 .175 .750 30.6 96 .038 1/4- 28
4053 .500 .562 .099 .078 .187 .308 .317 .175 .175 .812 30.6 96 .038 1/4- 28
4054 .500 .562 .099 .078 .187 .308 .380 .175 .175 .875 30.6 96 .038 1/4- 28
4055 .500 .562 .099 .078 .187 .308 .442 .175 .175 .937 30.6 96 .038 1/4- 28
4056 .500 .562 .099 .078 .187 .308 .505 .175 .175 1.000 30.6 96 .038 1/4- 28
4057 .500 .562 .099 .078 .187 .308 .567 .175 .175 1.062 30.6 96 .038 1/4- 28
4058 .500 .562 .099 .078 .187 .308 .630 .175 .175 1.125 30.6 96 .038 1/4- 28
4059 .500 .562 .099 .078 .187 .308 .692 .175 .175 1.187 30.6 96 .038 1/4- 28
4060 .500 .562 .099 .078 .187 .308 .754 .175 .175 1.250 30.6 96 .038 1/4- 28
4061 .500 .562 .099 .078 .187 .308 .817 .175 .175 1.313 30.6 96 .038 1/4- 28
4062 .500 .562 .099 .078 .187 .308 .880 .175 .175 1.375 30.6 96 .038 1/4- 28
4063 .500 .562 .099 .078 .187 .308 1.005 .175 .175 1.500 30.6 96 .038 1/4- 28
4064 .500 .562 .099 .078 .187 .308 1.255 .175 .175 1.750 30.6 96 .038 1/4- 28
4065 .500 .562 .099 .078 .187 .308 1.505 .175 .175 2.000 30.6 96 .038 1/4- 28
4066 .625 .687 .130 .094 .250 .370 .380 .230 .230 1.000 20.4 64 .041 5/16- 18
4067 .625 .687 .130 .094 .250 .370 .442 .230 .230 1.062 20.4 64 .041 5/16- 18
4068 .625 .687 .130 .094 .250 .370 .505 .230 .230 1.125 20.4 64 .041 5/16- 18
4069 .625 .687 .130 .094 .250 .370 .567 .230 .230 1.187 20.4 64 .041 5/16- 18
4070 .625 .687 .130 .094 .250 .370 .630 .230 .230 1.250 20.4 64 .041 5/16- 18
Part
No.
A
Before
Knurl
B
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1/64
C
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D
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E
REF
F
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G
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H
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M
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-.015
L
REF
Knurl
Teeth
Knurl
Pitch
Knurl
Cham-fer
Thread
4071 .625 .687 .130 .094 .250 .370 .692 .230 .230 1.313 20.4 64 .041 5/16- 18
4072 .625 .687 .130 .094 .250 .370 .755 .230 .230 1.375 20.4 64 .041 5/16- 18
4073 .625 .687 .130 .094 .250 .370 .880 .230 .230 1.500 20.4 64 .041 5/16- 18
4074 .625 .687 .130 .094 .250 .370 1.130 .230 .230 1.750 20.4 64 .041 5/16- 18
4075 .625 .687 .130 .094 .250 .370 1.380 .230 .230 2.000 20.4 64 .041 5/16- 18
4076 .625 .687 .130 .094 .250 .370 .380 .230 .230 1.000 20.4 64 .041 5/16-24
4077 .625 .687 .130 .094 .250 .370 .442 .230 .230 1.062 20.4 64 .041 5/16-24
4078 .625 .687 .130 .094 .250 .370 .505 .230 .230 1.125 20.4 64 .041 5/16-24
4079 .625 .687 .130 .094 .250 .370 .567 .230 .230 1.187 20.4 64 .041 5/16-24
4080 .625 .687 .130 .094 .250 .370 .630 .230 .230 1.250 20.4 64 .041 5/16-24
4081 .625 .687 .130 .094 .250 .370 .692 .230 .230 1.313 20.4 64 .041 5/16-24
4082 .625 .687 .130 .094 .250 .370 .755 .230 .230 1.375 20.4 64 .041 5/16-24
4083 .625 .687 .130 .094 .250 .370 .880 .230 .230 1.500 20.4 64 .041 5/16-24
4084 .625 .687 .130 .094 .250 .370 1.130 .230 .230 1.750 20.4 64 .041 5/16-24
4085 .625 .687 .130 .094 .250 .370 1.380 .230 .230 2.000 20.4 64 .041 5/16-24

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UNICORP is a leader in manufacturing stock and custom
electronic hardware, handles and precision fasteners used by leading companies
in nearly every industry since 1971.


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