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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 J4991A
PROTO J4974B
PROTO J4992C
PROTO J4993D
PROTO J4988ME
PROTO J4981F
PROTO J4984G
PROTO J4980H
PROTO J4978I
PROTO J4986J
PROTO J4985K
PROTO J4982L
PROTO J4994M
PROTO J4983N
PROTO J4987O
PROTO J4973CGP
PROTO J4996CGQ
PROTO J4973-TTR
PROTO J4969S
PROTO J4968T
StyleModelArm LengthArm TypeFinishHandle MaterialHandle TypeItemMeasurement TypeNumber Of PiecesPrice
A
J4991		-----Hex Key Set--£16.28
B
J4974		-----Hex Key Set--£11.18
C
J4992		-----Hex Key Set--£8.02
D
J4993		-----Hex Key Set--£11.60
E
J4988M		1.2" to 6.1"ShortBlack OxideAlloy SteelPlainHex Key SetMetric15£75.40
F
J4981		1.7" to 3.25"ShortBlack OxideAlloy SteelL-ShapedHex Key SetSAE11£9.22
G
J4984		1.7" to 4.3"ShortBlackAlloy SteelL-ShapedHex Key SetMetric9£17.02
H
J4980		1.7" to 4.25"ShortBlack OxideAlloy SteelL-ShapedHex Key SetSAE13£17.17
I
J4978		1.25" to 2"ShortBlack OxideChrome Plated SteelPlainHex Key SetSAE9£10.78
J
J4986		1.25" to 6.25"ShortBlack OxideAlloy SteelPlainHex Key SetSAE18£65.87
K
J4985		1.73" to 3.46"ShortBlackAlloy SteelL-ShapedHex Key SetMetric7£10.49
L
J4982		1.88" to 3.25"ShortBlack OxideSteelL-ShapedHex Key SetSAE7£6.37
M
J4994		2.4" to 3.3"ShortBlack OxideChrome Plated SteelFold-UpHex Key SetSAE5£16.94
N
J4983		2.8" to 6.75"LongBlack OxideAlloy SteelPlainHex Key SetSAE13£24.57
O
J4987		2.8" to 8.25"LongBlack OxideAlloy SteelPlainHex Key SetSAE14£41.02
P
J4973CG		3"LongBlack OxidePlasticFold-UpHex Key SetMetric6£19.63
Q
J4996CG		3"ShortBlack OxidePlasticFold-UpHex Key SetSAE6£20.75
R
J4973-TT		5"LongBlack OxideChrome Plated SteelPlainFolding Hex Key SetMetric6£41.90
S
J4969		6"-Black OxideVinylT-Handle, ErgonomicHex Key SetMetric6£72.74
T
J4968		6"-Black OxideVinylT-Handle, ErgonomicHex Key SetSAE11£147.78

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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