Hole Size And Edge Distance - Cessna 510 Mustang Structural Repair Manual

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Maintenance manual (11 pages)

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General

Rivets.

(1) Hole Size.

(a) Hole sizes for rivets must conform to the Rivet Hole Size and Edge Distance, Table 1. If an improperly installed

rivet must be removed, or if rivet removal is necessary for other reasons, the hole tolerances of column titled

permissible hole size for rework only are applicable. This allowance recognizes that after driving a rivet, the hole

is expanded by the force exerted by the swelled rivet, and must not be construed as lowering of workmanship

standards.

(2) Edge Distance.

(a) Edge distance for rivets must conform to the Rivet Hole Size and Edge Distance, Table 1, except as otherwise

specified in applicable section of repair manual. If flush rivets are used and sub sheet is not dimpled or

countersunk, the edge distance for non-flush rivets is applicable to the substructure.

(3) Nutplate.

(a) When riveting nutplates, it is permissible to install the nutplate attachment rivet with a minimum rivet edge

distance equal to one rivet diameter when you make attachment to material 0.040 and thicker, and one and one-

half times the rivet diameter when you attach nutplates to material under 0.040 thick.

(4) Tubular Rivets.

(a) Hole sizes for tubular rivets must be the same as for solid rivets.

Screws.

(1) Hole Size.

(a) Hole sizes for screws must conform to the Screw Hole Size and Edge Distance, Table 2, Table 3, except as

specified in applicable section of repair manual.

(2) Edge Distance.

(a) Edge distance for screws must conform to the Screw Hole Size and Edge Distance, Table 2, Table 3, except as

specified in applicable section of repair manual. Non-flush edge distance limits must apply to sub sheets not

countersunk or dimpled.

C. Rivet Spacing.

(1) Minimum spacing for rivets in a row is four times the rivet diameter. Maximum spacing for rivets is eight times the

fastener diameter. Distance between rows of rivets in a web or skin patch is five times the rivet diameter.

Table 1. Rivet Hole Size and Edge Distance

RIVET

DIAMETER

(INCHES)

0.062

0.094

Retain printed data for historical reference only. For future maintenance, use only current data.