ASNA0077 at a glance
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Specification
| Item | Value |
|---|---|
| Type | Blind rivet, bulbed, mechanically locked stem |
| Material | Letter A to F: steel or Monel sleeve, aluminium alloy or Monel (see the cross). Head marks: + = stainless-steel stem with aluminium-alloy sleeve; no mark = steel stem; M = Monel sleeve |
| Locking | Mechanically locked stem with a locking collar |
| Finish | Not stated in the standard data |
| Status | Reference data transcribed from the standard, units marked row by row. Check the issue of the standard in force before design use. |
Dimensions by size
| Dimension, inch first (mm after) | -4 | -5 | -6 |
|---|---|---|---|
| Nominal Ø (code) | 1/8 in (0.1250 in; 3.175 mm) | 5/32 in (0.1562 in; 3.969 mm) | 3/16 in (0.1875 in; 4.762 mm) |
| Printed name | 3.2 mm (printed in the tooling block) | 4 mm (printed in the tooling block) | 4.8 mm (printed in the tooling block) |
| Hole † | 0.1291–0.1319 in (3.28–3.35 mm†) | 0.1602–0.1642 in (4.07–4.17 mm†) | 0.1921–0.1961 in (4.88–4.98 mm†) |
| Drill (chart) | #30 (0.1285 in; 3.26 mm), just under the minimum: gauge the hole | #20 (0.1610 in; 4.09 mm) | #10 (0.1935 in; 4.91 mm) |
| Csk Ø † | 0.222–0.228 in (5.64–5.79 mm†) | 0.283–0.289 in (7.19–7.35 mm†) | 0.350–0.356 in (8.89–9.04 mm†) |
Units: no mark = printed in mm and stated by the standard. † = printed with no unit; the inch value is our conversion, reading the figure as mm. Nominal Ø is our reading of the inch code (1/32 in for diameters, 1/16 in for grips). Drill: from the site drill chart, inside the hole range except code 4, where the chart's #30 (0.1285 in) is just under the printed minimum (a drill cuts slightly oversize): gauge the finished hole.
Part numbers
Part numbers by diameter code and grip, letter A shown; swap the letter and add X as the code table says.
-4 · 1/8 in nominal13 part numbers
| Part no. | Grip, in (mm printed) |
|---|---|
| ASNA0077A402 | to 0.125 (to 3.18) |
| ASNA0077A403 | 0.126–0.187 (3.20–4.75) |
| ASNA0077A404 | 0.188–0.250 (4.78–6.35) |
| ASNA0077A405 | 0.251–0.312 (6.37–7.92) |
| ASNA0077A406 | 0.313–0.375 (7.95–9.52) |
| ASNA0077A407 | 0.376–0.437 (9.55–11.10) |
| ASNA0077A408 | 0.438–0.500 (11.13–12.70) |
| ASNA0077A409 | 0.501–0.562 (12.73–14.27) |
| ASNA0077A410 | 0.563–0.625 (14.30–15.88) |
| ASNA0077A411 | 0.626–0.687 (15.90–17.45) |
| ASNA0077A412 | 0.688–0.750 (17.48–19.05) |
| ASNA0077A413 | 0.751–0.812 (19.07–20.62) |
| ASNA0077A414 | 0.813–0.875 (20.65–22.22) |
-5 · 5/32 in nominal13 part numbers
| Part no. | Grip, in (mm printed) |
|---|---|
| ASNA0077A502 | to 0.125 (to 3.18) |
| ASNA0077A503 | 0.126–0.187 (3.20–4.75) |
| ASNA0077A504 | 0.188–0.250 (4.78–6.35) |
| ASNA0077A505 | 0.251–0.312 (6.37–7.92) |
| ASNA0077A506 | 0.313–0.375 (7.95–9.52) |
| ASNA0077A507 | 0.376–0.437 (9.55–11.10) |
| ASNA0077A508 | 0.438–0.500 (11.13–12.70) |
| ASNA0077A509 | 0.501–0.562 (12.73–14.27) |
| ASNA0077A510 | 0.563–0.625 (14.30–15.88) |
| ASNA0077A511 | 0.626–0.687 (15.90–17.45) |
| ASNA0077A512 | 0.688–0.750 (17.48–19.05) |
| ASNA0077A513 | 0.751–0.812 (19.07–20.62) |
| ASNA0077A514 | 0.813–0.875 (20.65–22.22) |
-6 · 3/16 in nominal13 part numbers
| Part no. | Grip, in (mm printed) |
|---|---|
| ASNA0077A602 | to 0.125 (to 3.18) |
| ASNA0077A603 | 0.126–0.187 (3.20–4.75) |
| ASNA0077A604 | 0.188–0.250 (4.78–6.35) |
| ASNA0077A605 | 0.251–0.312 (6.37–7.92) |
| ASNA0077A606 | 0.313–0.375 (7.95–9.52) |
| ASNA0077A607 | 0.376–0.437 (9.55–11.10) |
| ASNA0077A608 | 0.438–0.500 (11.13–12.70) |
| ASNA0077A609 | 0.501–0.562 (12.73–14.27) |
| ASNA0077A610 | 0.563–0.625 (14.30–15.88) |
| ASNA0077A611 | 0.626–0.687 (15.90–17.45) |
| ASNA0077A612 | 0.688–0.750 (17.48–19.05) |
| ASNA0077A613 | 0.751–0.812 (19.07–20.62) |
| ASNA0077A614 | 0.813–0.875 (20.65–22.22) |
Part number
How to read it
| Segment | Reads as ASNA0077A403X |
|---|---|
| ASNA0077 Standard | Bulbed blind rivet, mechanically locked stem with locking collar (CherryMAX type). Head: 100° countersunk.Unit of the code: None: the number of the standardFrom: The standard |
| A Material | Material letter A (CR3212 / CR3213, NAS9302B / NAS9301B). Letters B to F map to the other CherryMAX and Monel families (public decoder table)Unit of the code: Letter, no unitFrom: Letter list; the meanings marked as a reading come from the partner standards |
| 4 Diameter | 1/8 in nominal: 4 × 1/32 in (0.125 in · 3.175 mm, our conversion); hole 0.129–0.132 in · 3.28–3.35 mm (mm by context); countersink diameter 0.222–0.228 in · 5.64–5.79 mm (mm by context).Unit of the code: 1/32 in, by the inch dash logic (the standard only prints rounded mm); inch and mm values are our conversionFrom: Diameter and hole table (Dimensions by size, above) |
| 03 Grip | Max grip 3/16 in; stack 0.126–0.187 in · 3.20–4.75 mm.Unit of the code: 1/16 in steps, maximum grip (inch dash logic); the range is printed in mmFrom: Grip table (Part numbers, above) |
| X Oversize | Oversize, +1/64 in on the diameter (public decoder source); the head carries an inverted TUnit of the code: Letter, no unitFrom: Oversize letter (the head carries an inverted T) |
Worked example. ASNA0077A403X reads: ASNA0077 CherryMAX-type blind rivet, 100° countersunk · A CherryMAX series CR3212 · 4 1/8 in, hole 3.28–3.35 mm, drill #30 · 03 max 3/16 in, stack 3.20–4.75 mm · X +1/64 in shank.
From a measured hole or stack to the code
- Hole to diameter code. Measure the hole and take the code whose hole range holds it, never the nominal: 4 → 3.28–3.35 · 5 → 4.07–4.17 · 6 → 4.88–4.98 mm.
- Stack to grip code. Measure the total thickness to be joined with a grip gauge and take the code whose range holds it, for that diameter: a 4.00 mm stack with diameter 4 → grip 03 (3.20–4.75 mm).
If a segment is missing
- Without the standard number the codes cannot be read: grip code 04 is 4.78–6.35 mm on ASNA0077/0078, 5.56–7.16 mm on ASNA0026/0027, 5.59–7.14 mm on ASNA0081/0082.
- No material letter: the number is incomplete; letters A to F name different CherryMAX-type families.
- No diameter or grip code: the number names the family only, not a part; a default size is not given by the standard.
- No grip code: the number is incomplete; a default grip is not given by the standard.
- No X: standard size. X = oversize, +1/64 in: no hole size is printed for the oversize, so it is never drilled to the standard hole.
What each code means
| Part | Meaning |
|---|---|
| Format | ASNA0077<material><dash><os> |
| A | Material: Material letter A (CR3212 / CR3213, NAS9302B / NAS9301B). Letters B to F map to the other CherryMAX and Monel families (public decoder table) |
| (none) | Os: Standard size |
| X | Os: Oversize, +1/64 in on the diameter (public decoder source); the head carries an inverted T |
| Example | ASNA0077A403X — Material A, diameter code 4 (1/8 in nominal), grip code 03 (0.126–0.187 in; 3.20–4.75 mm printed), oversize X |
Tools
| Tool or head | Type | Codes |
|---|---|---|
| G747 (stroke 0.437 in; 11.1 mm printed) | pneumatic | 4, 5, 6 |
| G27 | hand tool | 4 only |
| H701B-456 | straight head | 4, 5, 6 |
| H747-456 + insert 782-456 | straight head | 4, 5, 6 |
| H753A-456 | right-angle (90°) head | 4, 5, 6 |
| H782 + insert 782-456 | offset head | 4, 5, 6 |
| H781-456 | offset head, restricted use | 4, 5, 6 (nose setback L = rivet diameter, mandatory for code 4) |
Use H781-456 only where access forces it.
Inspection limits
| Check | Limit, inch first |
|---|---|
| Gap under a countersunk head | Not more than 0.004 in (0.10 mm, printed in mm) over no more than half the periphery, on no more than 20 % of the row, never on 2 consecutive rivets |
| Stem and collar against the head top | Protrusion 0.25 maximum, recess 0.50 maximum (0.38 for code 4). Unit not stated (mm by context): not converted |
| Convex surfaces | Measure the head gap along the straight generatrices |
| Stem shaving | Only exceptionally and only if the drawing calls for it |
| Locking collar | Check that it is present |
| Countersunk head flush | Ideal 0; accepted +0.05 / −0.10. Unit not stated: not converted |
Limits as the standard gives them; the aircraft's SRM governs.
Notes from the standard
- Part number: ASNA0077 + material letter (A to F) + diameter code (4, 5 or 6) + grip code (02 and up) + optional X for oversize. The rows show letter A.
- Grips start at 02 (there is no 01 on ASNA0077; ASNA0078 starts at 01); the first code has no minimum. Each code n tops out at n/16 in: code 4 is 0.188–0.250 in (4.78–6.35 mm printed).
- The countersink must not go through the sheet; the figure keeps a small radius (0.25 minimum, unit not stated) at the cone-to-hole junction.
- The printed names 3,2 · 4 · 4,8 are mm (stated in the tooling block): 3,2 mm is 1/8 in rounded. No oversize hole size is printed.
- Units: no mark = printed in mm and stated by the standard. † = printed with no unit; the inch value is our conversion, reading the figure as mm. Nominal Ø is our reading of the inch code (1/32 in for diameters, 1/16 in for grips). Drill: from the site drill chart, inside the hole range except code 4, where the chart's #30 (0.1285 in) is just under the printed minimum (a drill cuts slightly oversize): gauge the finished hole.
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Sources
- ASNA0077 standard (ASNA series) — Codes, tables, tooling and inspection limits transcribed into the reference data of The Aviation Point. The text of the standard is not reproduced. Check the issue in force before design use.
- Cherry Aerospace pulling-head sheets — -MBU heads for the U type and the titanium -8 offset head; the same data feeds the Cherry pulling head selector.
- US federal item records (NSN) and distributor listings — Partner numbers. The evidence is named on each cross line: federal NSN record, manufacturer catalogue, or distributor listing (alternate, not identical).
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.