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PROTO Hex Key Sets


PROTO hex key sets are designed to tighten or loosen fastening screws in automotive, industrial machinery and scientific equipment. They have hexagonal tips to fit in the 6-sided indentation in the screw head or bolt.

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PROTO J4988MA
PROTO J4987B
PROTO J4993C
PROTO J4974D
PROTO J4991E
PROTO J4973-TTF
PROTO J4983G
PROTO J4986H
PROTO J4992I
PROTO J4985J
PROTO J4994K
PROTO J4980L
PROTO J4981M
PROTO J4982N
PROTO J4984O
PROTO J4969P
PROTO J4968Q
PROTO J4996CGR
StyleModelHandle MaterialLength FamilyArm LengthHandle ColorTip Size CodeHandle TypeNo. Of TipsNo. Of PiecesPrice
A
J4988M		Alloy, SteelShort1.2" to 6.1"-H0.7, H0.9, H1.3, H1.5, H10, H12, H14, H17, H2, H2.5, H3, H4, H5, H6, H8Plain215€103.43
B
J4987		Alloy, SteelLong2.8" to 8.25"-H0.05", H1/16", H1/2", H1/4", H1/8", H3/16", H3/32", H3/8", H5/16", H5/32", H5/64", H7/32", H7/64", H9/64"Plain214€59.29
C
J4993		Alloy, SteelShort-SilverH1/4", H1/8", H3/16", H3/32", H5/32", H5/64", H7/32", H7/64", H9/64"Plain99€17.41
D
J4974		Alloy, SteelShort-SilverH1.5H2H2.5H3H4H5H6Plain77€14.84
E
J4991		Alloy, SteelLong-SilverH1/4", H1/8", H3/16", H3/32", H5/32", H7/32", H7/64", H9/64"Plain88€22.71
F
J4973-TT		Alloy, SteelShort5"SilverH10, H3, H4, H5, H6, H8Plain66€58.61
G
J4983		Alloy, SteelLong2.8" to 6.75"-H1, 16", H1, 4", H1, 8", H3, 16", H3, 32", H3, 64", H3, 8", H5, 16", H5, 32", H5, 64", H7, 32", H7, 64", H9, 64"Plain213€34.18
H
J4986		Alloy, SteelShort1.25" to 6.25"-H1, 16", H1, 2", H1, 32", H1, 4", H1, 64", H1, 8", H3, 16", H3, 32", H3, 64", H3, 8", H5, 16", H5, 32", H5, 64", H5, 8", H7, 32", H7, 64", H9, 16", H9, 64"Plain218€98.35
I
J4992		Alloy, SteelShort-SilverH1/16", H1/8", H3/32", H3/64", H5/32", H5/64", H7/64", H9/64"Plain18€10.60
J
J4985		Alloy, SteelShort1.73" to 3.46"-H1.5, H2, H2.5, H3, H4, H5, H6Plain27€15.32
K
J4994		Alloy, SteelShort2.4" to 3.3"SilverH1, 4", H3, 16", H3, 8", H5, 16", H7, 32"Plain55€24.02
L
J4980		Alloy, SteelShort1.7" to 4.25"-H1, 16", H1, 4", H1, 8", H3, 16", H3, 32", H3, 64", H3, 8", H5, 16", H5, 32", H5, 64", H7, 32", H7, 64", H9, 64"Plain213€25.04
M
J4981		Alloy, SteelShort1.7" to 3.25"-H1, 16", H1, 4", H1, 8", H3, 16", H3, 32", H3, 64", H5, 32", H5, 64", H7, 32", H7, 64", H9, 64"Plain211€13.14
N
J4982		Alloy, Steel-1.88" to 3.25"-H1, 4", H1, 8", H3, 16", H3, 32", H5, 32", H5, 64", H7, 32"Plain27€9.51
O
J4984		Alloy, SteelShort1.7" to 4.3"-H1.5, H10, H2, H2.5, H3, H4, H5, H6, H8Plain29€25.70
P
J4969		PlasticLong6"BlueH2, H2.5, H3, H4, H5, H6Plastic Coated66€105.33
Q
J4968		PlasticLong6"RedH1, 4", H1, 8", H3, 16", H3, 32", H3, 8", H5, 16", H5, 32", H5, 64", H7, 32", H7, 64", H9, 64"Plastic Coated111€219.06
R
J4996CG		PlasticShort3"RedH1, 4", H3, 16", H3, 8", H5, 16", H5, 32", H7, 32"Plain66€30.38

Working Mechanism

  • Place one of the ends inside a fastener with a hexagonal key and turn it.
  • Turn the key for rotating the fastener to tighten or loosen it.
  • For tightening, rotate clockwise. For removing or loosening, turn it counter-clockwise.

Features

  • PROTO hex key sets feature heat-treated alloy steel construction with rust-resistant black oxide finish for prolonged use.
  • They come with plain, L-shaped, fold-up & ergonomic T-handles for convenient fastening.
  • The folding hex key sets (such as J4978) comprise multiple keys attached to one handle.
  • Keys with tips having a hex ball end allow fasteners access to hard-to-reach areas from multiple angles.
  • Selected models are L-shaped and have two arms of unequal length.
  • They allow both Metric & SAE measurement and are available in packs of 5, 6, 7, 9, 11, 13, 14, 15 & 18 pieces.
  • These sets are supplied in a metal storage box or moulded plastic holder.

Frequently Asked Questions

What is the difference between T-shaped and L-shaped keys?

T-shaped hex key sets (unlike L-shaped keys) feature one long arm with a drive tip at the end, along with a handle for delivering more torque when rotating fasteners.

What is the difference between long end & short end handle keys?

Rotating a long end handle key delivers more torque on the fastener, as compared to using a short end handle key.

How do you maintain hex key sets?

  • Protect keys from rust formation.
  • Store in a dry and clean place.
  • Wipe and lubricate after each use.

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