Will a #4F blade fit my clipper?

#4F detachable blades follow the A5 standard, so they interchange across A5-style clippers from Andis, Oster, Wahl (KM series), and Heiniger. They do not fit 5-in-1 adjustable-blade clippers (like the Wahl Bravura) or screw-on home clippers — those use their own blade systems.

Clipper blades Checked against maker charts

The #4F clipper blade

A #4F blade leaves about 3/8" (9.5 mm) of coat.

Cut length

3/8"(9.5 mm)

Type

Finish cut (F/FC) — even, smooth result

What the #4F is used for

Short-but-not-shaved: the classic 'short teddy' body length
Both maker charts call it for Shih Tzu, Maltese and Bichon pet cuts
Skip-tooth sibling: a plain #4 cuts the same 3/8" with a coarser feed

Breeds this length suits

Goldendoodle Shih Tzu Yorkshire Terrier Cocker Spaniel Miniature Schnauzer Bichon Frise Maltese Scottish Terrier

Blade choice always depends on coat condition — a matted coat needs a shorter blade than the style chart says. The blade & comb finder walks you through it.

Which clippers it fits

#4F detachable blades use the A5 standard — they interchange across Andis, Oster, Wahl KM-series, and Heiniger A5-style clippers regardless of which brand made the blade. They do not fit 5-in-1 adjustable clippers (Wahl Bravura/Arco) or screw-on home clippers, which take their own blade systems.

Leaves more coat

#3F / #3¾ 1/2"

Cuts closer

#5F 1/4"

All blade sizes

3/4HT 5/8HT #3F / #3¾#4F#5F #6FC #7F #7 skip-tooth #8½ #9 #10 #15 #30 #50 #40

FAQ

How much hair does a #4F blade leave?: A #4F blade leaves about 3/8" (9.5 mm) of coat.
Will a #4F blade fit my clipper?: #4F detachable blades follow the A5 standard, so they interchange across A5-style clippers from Andis, Oster, Wahl (KM series), and Heiniger. They do not fit 5-in-1 adjustable-blade clippers (like the Wahl Bravura) or screw-on home clippers — those use their own blade systems.

Sources